diff --git a/backend/models/ConsumableLog.js b/backend/models/ConsumableLog.js
index f0d6d95..9c72a5c 100644
--- a/backend/models/ConsumableLog.js
+++ b/backend/models/ConsumableLog.js
@@ -1,6 +1,5 @@
 const { DataTypes } = require('sequelize');
 const { sequelize } = require('../db');
-const Consumable = require('./Consumable');
 
 const ConsumableLog = sequelize.define('ConsumableLog', {
   id: {
@@ -78,6 +77,16 @@ const ConsumableLog = sequelize.define('ConsumableLog', {
     type: DataTypes.STRING,
     allowNull: true,
     comment: '修改原因'
+  },
+  isConsumableDeleted: {
+    type: DataTypes.BOOLEAN,
+    defaultValue: false,
+    comment: '关联耗材是否已被删除'
+  },
+  consumableSnapshot: {
+    type: DataTypes.JSON,
+    allowNull: true,
+    comment: '耗材快照信息（分类、单位、供应商等），用于耗材删除后追溯'
   }
 }, {
   tableName: 'consumable_logs',
@@ -89,13 +98,9 @@ const ConsumableLog = sequelize.define('ConsumableLog', {
     { fields: ['createdAt'] },
     { fields: ['consumableId', 'createdAt'] },
     { fields: ['originalLogId'] },
-    { fields: ['isEditable'] }
+    { fields: ['isEditable'] },
+    { fields: ['isConsumableDeleted'] }
   ]
 });
 
-ConsumableLog.belongsTo(Consumable, {
-  foreignKey: 'consumableId',
-  onDelete: 'CASCADE'
-});
-
 module.exports = ConsumableLog;
diff --git a/backend/routes/consumables.js b/backend/routes/consumables.js
index fe7a6a4..2de8599 100644
--- a/backend/routes/consumables.js
+++ b/backend/routes/consumables.js
@@ -70,7 +70,16 @@ router.post('/', async (req, res) => {
       currentStock: consumable.currentStock,
       operator: req.body.operator || req.body.operatorName || '系统',
       reason: '新建耗材',
-      notes: req.body.description || ''
+      notes: req.body.description || '',
+      consumableSnapshot: {
+        category: consumable.category,
+        unit: consumable.unit,
+        unitPrice: consumable.unitPrice,
+        supplier: consumable.supplier,
+        location: consumable.location,
+        minStock: consumable.minStock,
+        maxStock: consumable.maxStock
+      }
     }, { transaction });
     
     await transaction.commit();
@@ -138,7 +147,16 @@ router.post('/import', async (req, res) => {
           currentStock: consumable.currentStock,
           operator,
           reason: '批量导入',
-          notes: ''
+          notes: '',
+          consumableSnapshot: {
+            category: consumable.category,
+            unit: consumable.unit,
+            unitPrice: consumable.unitPrice,
+            supplier: consumable.supplier,
+            location: consumable.location,
+            minStock: consumable.minStock,
+            maxStock: consumable.maxStock
+          }
         }, { transaction });
         
         results.success++;
@@ -337,7 +355,14 @@ router.post('/quick-inout', async (req, res) => {
         operator,
         reason,
         notes,
-        isEditable: false
+        isEditable: false,
+        consumableSnapshot: {
+          category: consumable.category,
+          unit: consumable.unit,
+          unitPrice: consumable.unitPrice,
+          supplier: consumable.supplier,
+          location: consumable.location
+        }
       }, { transaction });
 
       await transaction.commit();
@@ -432,7 +457,14 @@ router.post('/inout', async (req, res) => {
         operator,
         reason,
         notes,
-        isEditable: false
+        isEditable: false,
+        consumableSnapshot: {
+          category: consumable.category,
+          unit: consumable.unit,
+          unitPrice: consumable.unitPrice,
+          supplier: consumable.supplier,
+          location: consumable.location
+        }
       }, { transaction });
 
       await transaction.commit();
@@ -515,7 +547,6 @@ router.post('/adjust', async (req, res) => {
       
       const changeQuantity = newStock - previousStock;
       
-      // 系统生成的调整记录不可编辑
       await ConsumableLog.create({
         consumableId,
         consumableName: consumable.name,
@@ -526,7 +557,14 @@ router.post('/adjust', async (req, res) => {
         operator,
         reason: reason || (adjustType === 'set' ? '库存调整为 ' + newStock : reason),
         notes: adjustType === 'set' ? `库存从 ${previousStock} 调整为 ${newStock}` : notes,
-        isEditable: false
+        isEditable: false,
+        consumableSnapshot: {
+          category: consumable.category,
+          unit: consumable.unit,
+          unitPrice: consumable.unitPrice,
+          supplier: consumable.supplier,
+          location: consumable.location
+        }
       }, { transaction });
       
       await transaction.commit();
@@ -618,7 +656,7 @@ router.get('/logs/export', async (req, res) => {
       order: [['createdAt', 'DESC']]
     });
     
-    const csvHeader = 'ID,耗材ID,耗材名称,操作类型,变动数量,操作前库存,操作后库存,操作人,原因,备注,创建时间,更新时间\n';
+    const csvHeader = 'ID,耗材ID,耗材名称,操作类型,变动数量,操作前库存,操作后库存,操作人,原因,备注,耗材状态,分类,单位,单价,创建时间,更新时间\n';
     const csvRows = logs.map(log => {
       const operationTypeMap = {
         'in': '入库',
@@ -629,6 +667,7 @@ router.get('/logs/export', async (req, res) => {
         'adjust': '调整',
         'import': '导入'
       };
+      const snapshot = log.consumableSnapshot || {};
       return [
         log.id,
         log.consumableId,
@@ -640,6 +679,10 @@ router.get('/logs/export', async (req, res) => {
         log.operator,
         log.reason || '',
         log.notes || '',
+        log.isConsumableDeleted ? '已删除' : '正常',
+        snapshot.category || '',
+        snapshot.unit || '',
+        snapshot.unitPrice || '',
         dayjs(log.createdAt).format('YYYY-MM-DD HH:mm:ss'),
         dayjs(log.updatedAt).format('YYYY-MM-DD HH:mm:ss')
       ].map(v => `"${String(v).replace(/"/g, '""')}"`).join(',');
@@ -754,7 +797,14 @@ router.put('/:id', async (req, res) => {
       currentStock: consumable.currentStock,
       operator: req.body.operator || req.body.operatorName || '系统',
       reason: '信息更新',
-      notes: `更新字段: ${Object.keys(req.body).join(', ')}`
+      notes: `更新字段: ${Object.keys(req.body).join(', ')}`,
+      consumableSnapshot: {
+        category: consumable.category,
+        unit: consumable.unit,
+        unitPrice: consumable.unitPrice,
+        supplier: consumable.supplier,
+        location: consumable.location
+      }
     }, { transaction });
     
     await transaction.commit();
@@ -777,17 +827,51 @@ router.delete('/:id', async (req, res) => {
     const consumableId = consumable.consumableId;
     const consumableName = consumable.name;
     const currentStock = consumable.currentStock;
+    const operator = req.body.operator || req.query.operator || '系统';
+
+    const consumableSnapshot = {
+      category: consumable.category,
+      unit: consumable.unit,
+      unitPrice: consumable.unitPrice,
+      supplier: consumable.supplier,
+      location: consumable.location,
+      description: consumable.description,
+      minStock: consumable.minStock,
+      maxStock: consumable.maxStock,
+      status: consumable.status
+    };
+
+    await ConsumableLog.create({
+      consumableId,
+      consumableName,
+      operationType: 'delete',
+      quantity: -currentStock,
+      previousStock: currentStock,
+      currentStock: 0,
+      operator,
+      reason: '删除耗材',
+      notes: `删除耗材：${consumableName}，删除时库存为 ${currentStock}`,
+      isEditable: false,
+      isConsumableDeleted: true,
+      consumableSnapshot
+    }, { transaction });
+
+    await ConsumableLog.update(
+      {
+        isConsumableDeleted: true,
+        consumableSnapshot
+      },
+      {
+        where: { consumableId },
+        transaction
+      }
+    );
 
     await ConsumableRecord.destroy({
       where: { consumableId },
       transaction
     });
 
-    await ConsumableLog.destroy({
-      where: { consumableId },
-      transaction
-    });
-
     await consumable.destroy({ transaction });
 
     await transaction.commit();
diff --git a/backend/scripts/migrate-consumable-log-decouple.js b/backend/scripts/migrate-consumable-log-decouple.js
new file mode 100644
index 0000000..44e1bc9
--- /dev/null
+++ b/backend/scripts/migrate-consumable-log-decouple.js
@@ -0,0 +1,167 @@
+/**
+ * 耗材操作日志解耦迁移脚本
+ * 添加 isConsumableDeleted 和 consumableSnapshot 字段
+ * 实现耗材删除后日志仍可保留
+ */
+
+const { sequelize, DB_TYPE } = require('../db');
+const Consumable = require('../models/Consumable');
+const ConsumableLog = require('../models/ConsumableLog');
+
+async function migrate() {
+  try {
+    console.log('开始迁移耗材操作日志解耦...');
+    console.log(`数据库类型: ${DB_TYPE}`);
+
+    const isMySQL = DB_TYPE === 'mysql';
+
+    if (isMySQL) {
+      await migrateMySQL();
+    } else {
+      await migrateSQLite();
+    }
+
+    await updateExistingLogs();
+
+    console.log('\n迁移完成！耗材删除后日志将被保留。');
+    process.exit(0);
+  } catch (error) {
+    console.error('迁移失败:', error);
+    process.exit(1);
+  }
+}
+
+async function migrateMySQL() {
+  console.log('\n执行 MySQL 迁移...');
+
+  try {
+    await sequelize.query(`
+      ALTER TABLE consumable_logs 
+      ADD COLUMN isConsumableDeleted TINYINT(1) DEFAULT 0 COMMENT '关联耗材是否已被删除'
+    `);
+    console.log('✓ 添加 isConsumableDeleted 字段成功');
+  } catch (err) {
+    if (err.message.includes('Duplicate column')) {
+      console.log('✓ isConsumableDeleted 字段已存在');
+    } else {
+      throw err;
+    }
+  }
+
+  try {
+    await sequelize.query(`
+      ALTER TABLE consumable_logs 
+      ADD COLUMN consumableSnapshot JSON DEFAULT NULL COMMENT '耗材快照信息'
+    `);
+    console.log('✓ 添加 consumableSnapshot 字段成功');
+  } catch (err) {
+    if (err.message.includes('Duplicate column')) {
+      console.log('✓ consumableSnapshot 字段已存在');
+    } else {
+      throw err;
+    }
+  }
+
+  try {
+    await sequelize.query(`
+      CREATE INDEX idx_consumable_logs_is_deleted ON consumable_logs(isConsumableDeleted)
+    `);
+    console.log('✓ 创建 isConsumableDeleted 索引成功');
+  } catch (err) {
+    if (err.message.includes('Duplicate key name')) {
+      console.log('✓ isConsumableDeleted 索引已存在');
+    } else {
+      console.log('! isConsumableDeleted 索引创建失败:', err.message);
+    }
+  }
+}
+
+async function migrateSQLite() {
+  console.log('\n执行 SQLite 迁移...');
+
+  try {
+    await sequelize.query(`
+      ALTER TABLE consumable_logs ADD COLUMN isConsumableDeleted BOOLEAN DEFAULT 0
+    `);
+    console.log('✓ 添加 isConsumableDeleted 字段成功');
+  } catch (err) {
+    if (err.message.includes('duplicate column name')) {
+      console.log('✓ isConsumableDeleted 字段已存在');
+    } else {
+      throw err;
+    }
+  }
+
+  try {
+    await sequelize.query(`
+      ALTER TABLE consumable_logs ADD COLUMN consumableSnapshot TEXT
+    `);
+    console.log('✓ 添加 consumableSnapshot 字段成功');
+  } catch (err) {
+    if (err.message.includes('duplicate column name')) {
+      console.log('✓ consumableSnapshot 字段已存在');
+    } else {
+      throw err;
+    }
+  }
+
+  try {
+    await sequelize.query(`
+      CREATE INDEX IF NOT EXISTS idx_consumable_logs_is_deleted ON consumable_logs(isConsumableDeleted)
+    `);
+    console.log('✓ 创建 isConsumableDeleted 索引成功');
+  } catch (err) {
+    console.log('! isConsumableDeleted 索引创建失败:', err.message);
+  }
+}
+
+async function updateExistingLogs() {
+  console.log('\n更新现有日志数据...');
+
+  try {
+    const consumables = await Consumable.findAll({
+      attributes: ['consumableId', 'category', 'unit', 'unitPrice', 'supplier', 'location', 'minStock', 'maxStock', 'status']
+    });
+
+    const consumableMap = new Map();
+    consumables.forEach(c => {
+      consumableMap.set(c.consumableId, {
+        category: c.category,
+        unit: c.unit,
+        unitPrice: c.unitPrice,
+        supplier: c.supplier,
+        location: c.location,
+        minStock: c.minStock,
+        maxStock: c.maxStock,
+        status: c.status
+      });
+    });
+
+    const logs = await ConsumableLog.findAll({
+      where: {
+        consumableSnapshot: null
+      }
+    });
+
+    let updatedCount = 0;
+    for (const log of logs) {
+      const snapshot = consumableMap.get(log.consumableId);
+      if (snapshot) {
+        await log.update({ consumableSnapshot: snapshot });
+        updatedCount++;
+      }
+    }
+
+    console.log(`✓ 更新了 ${updatedCount} 条日志的快照信息`);
+
+    const deletedLogsCount = await ConsumableLog.count({
+      where: { operationType: 'delete' }
+    });
+    console.log(`✓ 当前有 ${deletedLogsCount} 条删除类型日志`);
+
+  } catch (error) {
+    console.log('! 更新现有日志数据时出错:', error.message);
+  }
+}
+
+migrate();
diff --git a/frontend/src/pages/ConsumableLogs.jsx b/frontend/src/pages/ConsumableLogs.jsx
index 8b4c4f6..83e0df9 100644
--- a/frontend/src/pages/ConsumableLogs.jsx
+++ b/frontend/src/pages/ConsumableLogs.jsx
@@ -121,13 +121,39 @@ function ConsumableLogs() {
       dataIndex: 'consumableId',
       key: 'consumableId',
       width: 150,
-      render: value => <code>{value}</code>,
+      render: (value, record) => (
+        <Space>
+          <code>{value}</code>
+          {record.isConsumableDeleted && (
+            <Tooltip title="该耗材已被删除">
+              <Tag color="red">已删除</Tag>
+            </Tooltip>
+          )}
+        </Space>
+      ),
     },
     {
       title: '耗材名称',
       dataIndex: 'consumableName',
       key: 'consumableName',
       width: 150,
+      render: (value, record) => (
+        <Tooltip
+          title={
+            record.consumableSnapshot ? (
+              <div>
+                <div>分类: {record.consumableSnapshot.category || '-'}</div>
+                <div>单位: {record.consumableSnapshot.unit || '-'}</div>
+                <div>单价: {record.consumableSnapshot.unitPrice || '-'}</div>
+                <div>供应商: {record.consumableSnapshot.supplier || '-'}</div>
+                <div>位置: {record.consumableSnapshot.location || '-'}</div>
+              </div>
+            ) : null
+          }
+        >
+          <span>{value}</span>
+        </Tooltip>
+      ),
     },
     {
       title: '操作类型',
@@ -277,6 +303,10 @@ function ConsumableLogs() {
         操作人: log.operator,
         原因: log.reason || '',
         备注: log.notes || '',
+        耗材状态: log.isConsumableDeleted ? '已删除' : '正常',
+        分类: log.consumableSnapshot?.category || '',
+        单位: log.consumableSnapshot?.unit || '',
+        单价: log.consumableSnapshot?.unitPrice || '',
       }));
 
       const ws = XLSX.utils.json_to_sheet(exportData);
@@ -646,6 +676,7 @@ function ConsumableLogs() {
                 <div style={{ fontSize: 12, color: '#666' }}>
                   <p>
                     <strong>耗材:</strong> {item.consumableName} ({item.consumableId})
+                    {item.isConsumableDeleted && <Tag color="red" style={{ marginLeft: 8 }}>已删除</Tag>}
                   </p>
                   <p>
                     <strong>操作人:</strong> {item.operator}
@@ -660,6 +691,13 @@ function ConsumableLogs() {
                       <strong>备注:</strong> {item.notes}
                     </p>
                   )}
+                  {item.consumableSnapshot && (
+                    <p>
+                      <strong>快照信息:</strong> 分类:{item.consumableSnapshot.category || '-'} | 
+                      单位:{item.consumableSnapshot.unit || '-'} | 
+                      单价:{item.consumableSnapshot.unitPrice || '-'}
+                    </p>
+                  )}
                   {item.modifiedBy && (
                     <>
                       <p>