diff --git a/main/manager-api/src/main/java/xiaozhi/modules/config/service/impl/ConfigServiceImpl.java b/main/manager-api/src/main/java/xiaozhi/modules/config/service/impl/ConfigServiceImpl.java
index 476f09cd..5586b9f0 100644
--- a/main/manager-api/src/main/java/xiaozhi/modules/config/service/impl/ConfigServiceImpl.java
+++ b/main/manager-api/src/main/java/xiaozhi/modules/config/service/impl/ConfigServiceImpl.java
@@ -298,6 +298,20 @@ public class ConfigServiceImpl implements ConfigService {
             Map<String, Object> voiceprintConfig = new HashMap<>();
             voiceprintConfig.put("url", voiceprintUrl);
             voiceprintConfig.put("speakers", speakers);
+            
+            // 获取声纹识别相似度阈值，默认0.4
+            String thresholdStr = sysParamsService.getValue("server.voiceprint_similarity_threshold", true);
+            if (StringUtils.isNotBlank(thresholdStr) && !"null".equals(thresholdStr)) {
+                try {
+                    double threshold = Double.parseDouble(thresholdStr);
+                    voiceprintConfig.put("similarity_threshold", threshold);
+                } catch (NumberFormatException e) {
+                    // 如果解析失败，使用默认值0.4
+                    voiceprintConfig.put("similarity_threshold", 0.4);
+                }
+            } else {
+                voiceprintConfig.put("similarity_threshold", 0.4);
+            }
 
             result.put("voiceprint", voiceprintConfig);
         } catch (Exception e) {
diff --git a/main/manager-api/src/main/resources/db/changelog/202509081140.sql b/main/manager-api/src/main/resources/db/changelog/202509081140.sql
new file mode 100644
index 00000000..9dec9d04
--- /dev/null
+++ b/main/manager-api/src/main/resources/db/changelog/202509081140.sql
@@ -0,0 +1,4 @@
+-- 添加声纹识别相似度阈值参数配置
+delete from `sys_params` where id = 115;
+INSERT INTO `sys_params` (id, param_code, param_value, value_type, param_type, remark)
+VALUES (115, 'server.voiceprint_similarity_threshold', '0.4', 'string', 1, '声纹识别相似度阈值，范围0.0-1.0，默认0.4，数值越高越严格');
diff --git a/main/manager-api/src/main/resources/db/changelog/db.changelog-master.yaml b/main/manager-api/src/main/resources/db/changelog/db.changelog-master.yaml
index 0e8d3dc3..dada3c78 100755
--- a/main/manager-api/src/main/resources/db/changelog/db.changelog-master.yaml
+++ b/main/manager-api/src/main/resources/db/changelog/db.changelog-master.yaml
@@ -303,3 +303,10 @@ databaseChangeLog:
         - sqlFile:
             encoding: utf8
             path: classpath:db/changelog/202508131557.sql
+  - changeSet:
+      id: 202509081140
+      author: cgd
+      changes:
+        - sqlFile:
+            encoding: utf8
+            path: classpath:db/changelog/202509081140.sql