diff --git a/db/dbuml.db3 b/db/dbuml.db3
index 6cb7524..385a51e 100644
Binary files a/db/dbuml.db3 and b/db/dbuml.db3 differ
diff --git a/src/model/DataManager.java b/src/model/DataManager.java
index 09d1dc3..f072755 100644
--- a/src/model/DataManager.java
+++ b/src/model/DataManager.java
@@ -169,25 +169,106 @@ public class DataManager {
         OperationLog log = new OperationLog(id, operationType, operationTarget,
                 operator, LocalDateTime.now(), details);
         operationLogs.add(log);
+        
+        // 添加数据库操作
+        String url = "jdbc:sqlite:db/dbuml.db3";
+        String sql = "INSERT INTO operation_logs (id, operation_type, operation_target, operator, operation_time, details) " +
+                "VALUES (?, ?, ?, ?, ?, ?)";
+                
+        try (Connection conn = DriverManager.getConnection(url);
+             PreparedStatement pstmt = conn.prepareStatement(sql)) {
+                
+                pstmt.setString(1, log.getId());
+                pstmt.setString(2, log.getOperationType());
+                pstmt.setString(3, log.getOperationTarget());
+                pstmt.setString(4, log.getOperator());
+                pstmt.setString(5, log.getOperationTime().format(DateTimeFormatter.ISO_LOCAL_DATE_TIME));
+                pstmt.setString(6, log.getDetails());
+                
+                pstmt.executeUpdate();
+                
+        } catch (SQLException e) {
+            e.printStackTrace();
+            showAlert("错误", "保存操作日志失败：" + e.getMessage());
+        }
     }
 
     public List<OperationLog> getOperationLogs() {
-        return new ArrayList<>(operationLogs);
+        List<OperationLog> logs = new ArrayList<>();
+        String url = "jdbc:sqlite:db/dbuml.db3";
+        String sql = "SELECT * FROM operation_logs ORDER BY operation_time DESC";
+        
+        try (Connection conn = DriverManager.getConnection(url);
+             Statement stmt = conn.createStatement();
+             ResultSet rs = stmt.executeQuery(sql)) {
+            
+            while (rs.next()) {
+                OperationLog log = new OperationLog(
+                    rs.getString("id"),
+                    rs.getString("operation_type"),
+                    rs.getString("operation_target"),
+                    rs.getString("operator"),
+                    LocalDateTime.parse(rs.getString("operation_time")),
+                    rs.getString("details")
+                );
+                logs.add(log);
+            }
+            
+        } catch (SQLException e) {
+            e.printStackTrace();
+            showAlert("错误", "读取操作日志失败：" + e.getMessage());
+        }
+        
+        return logs;
     }
 
     public List<OperationLog> getFilteredOperationLogs(LocalDateTime startDate, LocalDateTime endDate, String operationType) {
-        return operationLogs.stream()
-                .filter(log -> {
-                    boolean timeMatch = true;
-                    if (startDate != null && endDate != null) {
-                        timeMatch = !log.getOperationTime().isBefore(startDate) &&
-                                !log.getOperationTime().isAfter(endDate);
-                    }
-                    boolean typeMatch = "全部".equals(operationType) ||
-                            operationType.equals(log.getOperationType());
-                    return timeMatch && typeMatch;
-                })
-                .collect(Collectors.toList());
+        List<OperationLog> logs = new ArrayList<>();
+        String url = "jdbc:sqlite:db/dbuml.db3";
+        
+        StringBuilder sql = new StringBuilder("SELECT * FROM operation_logs WHERE 1=1");
+        List<Object> params = new ArrayList<>();
+        
+        if (startDate != null && endDate != null) {
+            sql.append(" AND operation_time BETWEEN ? AND ?");
+            params.add(startDate.format(DateTimeFormatter.ISO_LOCAL_DATE_TIME));
+            params.add(endDate.format(DateTimeFormatter.ISO_LOCAL_DATE_TIME));
+        }
+        
+        if (!"全部".equals(operationType)) {
+            sql.append(" AND operation_type = ?");
+            params.add(operationType);
+        }
+        
+        sql.append(" ORDER BY operation_time DESC");
+        
+        try (Connection conn = DriverManager.getConnection(url);
+             PreparedStatement pstmt = conn.prepareStatement(sql.toString())) {
+            
+            // 设置参数
+            for (int i = 0; i < params.size(); i++) {
+                pstmt.setObject(i + 1, params.get(i));
+            }
+            
+            ResultSet rs = pstmt.executeQuery();
+            while (rs.next()) {
+                OperationLog log = new OperationLog(
+                    rs.getString("id"),
+                    rs.getString("operation_type"),
+                    rs.getString("operation_target"),
+                    rs.getString("operator"),
+                    LocalDateTime.parse(rs.getString("operation_time")),
+                    rs.getString("details")
+                );
+                logs.add(log);
+            }
+            
+        } catch (SQLException e) {
+            e.printStackTrace();
+            showAlert("错误", "读取操作日志失败：" + e.getMessage());
+        }
+        
+        return logs;
     }
 
 
@@ -219,8 +300,8 @@ public class DataManager {
             // Synchronize memory data
             addGoods(goods);
 
-            // Add operation log
-            addOperationLog("新增", goods.getId(), "当前用户", "新增货物: " + goods.getName());
+            // 将操作日志类型从"新增"改为"修改"
+            addOperationLog("修改", goods.getId(), "当前用户", "修改货物: " + goods.getName());
         } catch (SQLException e) {
             e.printStackTrace();
             showAlert("错误", "添加货物失败：" + e.getMessage());