diff --git a/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java b/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java
index db565b3..eb10ac1 100644
--- a/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java
+++ b/src/main/java/cn/teammodel/controller/admin/service/impl/TeacherServiceImpl.java
@@ -819,6 +819,10 @@ public class TeacherServiceImpl implements TeacherService {
             Map<String, Long> degreeCount = new HashMap<>();
             Map<String, Long> subjectCount = new HashMap<>();
             Map<String, Long> teachingAgeCount = new HashMap<>();
+            teachingAgeCount.put("0-5年", 0L);
+            teachingAgeCount.put("5-10年", 0L);
+            teachingAgeCount.put("10-15年", 0L);
+            teachingAgeCount.put("15年以上", 0L);
             Map<String, Long> averageTeachingAgeCount = new HashMap<>();
             if(StringUtils.isNotEmpty(teacherDto.getGrade()) && StringUtils.isNotEmpty(teacherDto.getSubjectId())) {
                 for (PtTeacherInfo teacher : ptTeacherInfos) {
@@ -845,22 +849,21 @@ public class TeacherServiceImpl implements TeacherService {
                         //获取教龄分类信息
                         if (teacher.getTeachingAge() != null) {
                             int age = teacher.getTeachingAge();
-                            String teachingAge = "";
-                            if (age >= 0 && age <= 5) {
+                            String teachingAge;
+                            if (age <= 5) {
                                 teachingAge = "0-5年";
-                            } else if (age > 5 && age <= 10) {
+                            } else if (age <= 10) {
                                 teachingAge = "5-10年";
-                            } else if (age > 10 && age <= 15) {
+                            } else if (age <= 15) {
                                 teachingAge = "10-15年";
                             } else {
                                 teachingAge = "15年以上";
                             }
-                            Long count = teachingAgeCount.getOrDefault(teachingAge, 0L);
-                            teachingAgeCount.put(teachingAge, count + 1);
+                            // 直接累加（键已存在）
+                            teachingAgeCount.put(teachingAge, teachingAgeCount.get(teachingAge) + 1);
 
-                            totalTeachingAge += teacher.getTeachingAge();
+                            totalTeachingAge += age;
                             validTeachers++;
-                            //计算评价教龄
                         }
                            // 计算平均教龄（新增逻辑）
                         long averageTeachingAge = validTeachers > 0 ? Math.round((float) totalTeachingAge / validTeachers) : 0;
@@ -900,22 +903,21 @@ public class TeacherServiceImpl implements TeacherService {
                         //获取教龄分类信息
                         if (teacher.getTeachingAge() != null) {
                             int age = teacher.getTeachingAge();
-                            String teachingAge = "";
-                            if (age >= 0 && age <= 5) {
+                            String teachingAge;
+                            if (age <= 5) {
                                 teachingAge = "0-5年";
-                            } else if (age > 5 && age <= 10) {
+                            } else if (age <= 10) {
                                 teachingAge = "5-10年";
-                            } else if (age > 10 && age <= 15) {
+                            } else if (age <= 15) {
                                 teachingAge = "10-15年";
-                            } else  {
+                            } else {
                                 teachingAge = "15年以上";
                             }
-                            Long count = teachingAgeCount.getOrDefault(teachingAge, 0L);
-                            teachingAgeCount.put(teachingAge, count + 1);
+                            // 直接累加（键已存在）
+                            teachingAgeCount.put(teachingAge, teachingAgeCount.get(teachingAge) + 1);
 
-                            totalTeachingAge += teacher.getTeachingAge();
+                            totalTeachingAge += age;
                             validTeachers++;
-                            //计算评价教龄
                         }
                         // 计算平均教龄（新增逻辑）
                         long averageTeachingAge = validTeachers > 0 ? Math.round((float) totalTeachingAge / validTeachers) : 0;
@@ -950,22 +952,21 @@ public class TeacherServiceImpl implements TeacherService {
                         //获取教龄分类信息
                         if (teacher.getTeachingAge() != null) {
                             int age = teacher.getTeachingAge();
-                            String teachingAge = "";
-                            if (age >= 0 && age <= 5) {
+                            String teachingAge;
+                            if (age <= 5) {
                                 teachingAge = "0-5年";
-                            } else if (age > 5 && age <= 10) {
+                            } else if (age <= 10) {
                                 teachingAge = "5-10年";
-                            } else if (age > 10 && age <= 15) {
+                            } else if (age <= 15) {
                                 teachingAge = "10-15年";
-                            } else  {
+                            } else {
                                 teachingAge = "15年以上";
                             }
-                            Long count = teachingAgeCount.getOrDefault(teachingAge, 0L);
-                            teachingAgeCount.put(teachingAge, count + 1);
+                            // 直接累加（键已存在）
+                            teachingAgeCount.put(teachingAge, teachingAgeCount.get(teachingAge) + 1);
 
-                            totalTeachingAge += teacher.getTeachingAge();
+                            totalTeachingAge += age;
                             validTeachers++;
-                            //计算评价教龄
                         }
                         // 计算平均教龄（新增逻辑）
                         long averageTeachingAge = validTeachers > 0 ? Math.round((float) totalTeachingAge / validTeachers) : 0;
@@ -1001,22 +1002,21 @@ public class TeacherServiceImpl implements TeacherService {
                     //获取教龄分类信息
                     if (teacher.getTeachingAge() != null) {
                         int age = teacher.getTeachingAge();
-                        String teachingAge = "";
-                        if (age >= 0 && age <= 5) {
+                        String teachingAge;
+                        if (age <= 5) {
                             teachingAge = "0-5年";
-                        } else if (age > 5 && age <= 10) {
+                        } else if (age <= 10) {
                             teachingAge = "5-10年";
-                        } else if (age > 10 && age <= 15) {
+                        } else if (age <= 15) {
                             teachingAge = "10-15年";
-                        } else  {
+                        } else {
                             teachingAge = "15年以上";
                         }
-                        Long count = teachingAgeCount.getOrDefault(teachingAge, 0L);
-                        teachingAgeCount.put(teachingAge, count + 1);
+                        // 直接累加（键已存在）
+                        teachingAgeCount.put(teachingAge, teachingAgeCount.get(teachingAge) + 1);
 
-                        totalTeachingAge += teacher.getTeachingAge();
+                        totalTeachingAge += age;
                         validTeachers++;
-                        //计算评价教龄
                     }
                     // 计算平均教龄（新增逻辑）
                     long averageTeachingAge = validTeachers > 0 ? Math.round((float) totalTeachingAge / validTeachers) : 0;