diff --git a/src/modules/knowledge/service/film.ts b/src/modules/knowledge/service/film.ts
new file mode 100644
index 0000000..2c048aa
--- /dev/null
+++ b/src/modules/knowledge/service/film.ts
@@ -0,0 +1,127 @@
+import { KnowledgeFilmEntity } from './../entity/film';
+import { Inject, Provide } from '@midwayjs/core';
+import { BaseService } from '@cool-midway/core';
+import { InjectEntityModel } from '@midwayjs/typeorm';
+import { Repository } from 'typeorm';
+import { escapeObject } from '../utils/xss';
+
+/**
+ * 知识库模块-电影信息
+ */
+@Provide()
+export class KnowledgeFilmService extends BaseService {
+  @InjectEntityModel(KnowledgeFilmEntity)
+  knowledgeFilmEntity: Repository<KnowledgeFilmEntity>;
+
+  @Inject()
+  ctx;
+
+  /**
+   * 新增电影
+   * - 业务层查重：检查同名电影是否已存在
+   * - 对用户输入进行 XSS 过滤，防止存储型 XSS 攻击
+   * - 排除 posters 字段（JSON数组，不需要转义）
+   * @param params 电影数据
+   */
+  async add(params: any) {
+    // 业务层查重：检查同名电影是否已存在
+    if (params.name) {
+      const exist = await this.knowledgeFilmEntity.findOne({
+        where: { name: params.name }
+      });
+      if (exist) {
+        throw new Error(`电影"${params.name}"已存在，请勿重复添加`);
+      }
+    }
+    // XSS 过滤 - 排除 posters 字段（JSON 数组）
+    const safeParams = escapeObject(params, ['posters']);
+    return super.add(safeParams);
+  }
+
+  /**
+   * 更新电影
+   * - 对用户输入进行 XSS 过滤，防止存储型 XSS 攻击
+   * - 排除 posters 字段（JSON数组，不需要转义）
+   * @param params 电影数据
+   */
+  async update(params: any) {
+    // XSS 过滤 - 排除 posters 字段（JSON 数组）
+    const safeParams = escapeObject(params, ['posters']);
+    return super.update(safeParams);
+  }
+
+  /**
+   * API: importFilms - 批量导入电影数据
+   * - 业务层查重：检查同名电影是否已存在，已存在则跳过
+   * - 将 Excel 导入的数据逐条插入数据库
+   * - 跳过名称为空的记录
+   * - 对文本字段进行 XSS 过滤
+   * @param films 电影数据数组（来自 Excel 解析）
+   * @returns 导入结果统计
+   */
+  async importFilms(films: any[]) {
+    const successList: string[] = [];
+    const failList: { name: string; error: string }[] = [];
+    const skipList: string[] = [];
+
+    for (const film of films) {
+      // 跳过名称为空的记录
+      if (!film.name) {
+        failList.push({ name: film.name || '(空)', error: '名称不能为空' });
+        continue;
+      }
+
+      // 业务层查重：检查同名电影是否已存在
+      const exist = await this.knowledgeFilmEntity.findOne({
+        where: { name: film.name }
+      });
+      if (exist) {
+        skipList.push(film.name);
+        continue;
+      }
+
+      try {
+        // 映射 Excel 列名到数据库字段
+        const filmData = {
+          name: film.name || '',
+          director: film.director || film['导演'] || film['导演/作者'] || '',
+          year: film.year || film['年份'] || null,
+          country: film.country || film['国家'] || '',
+          language: film.language || film['语言'] || '',
+          mainCharacters: film.mainCharacters || film['主要人物'] || '',
+          synopsis: film.synopsis || film['内容简介'] || '',
+          backgroundStory: film.backgroundStory || film['背景故事'] || '',
+          posters: film.posters || film['海报链接']
+            ? [film.posters || film['海报链接']]
+            : [],
+          categoryId: film.categoryId ?? film['分类ID'] ?? film['分类'] ?? 45,
+          quality: film.quality || film['质量'] || film['质量评级'] || 'C',
+          watched: film.watched || film['是否已看'] || false,
+          doubanRating: film.doubanRating || film['豆瓣评分'] || null,
+          tmdbRating: film.tmdbRating || film['TMDB评分'] || null,
+          link: film.link || film['链接'] || '',
+          honors: film.honors || film['荣誉'] || '',
+          highlights: film.highlights || film['亮点所在'] || '',
+          whyWorthWatching: film.whyWorthWatching || film['为什么值得一看'] || ''
+        };
+
+        // XSS 过滤
+        const safeData = escapeObject(filmData, ['posters']);
+        await this.knowledgeFilmEntity.insert(safeData);
+        successList.push(filmData.name);
+      } catch (e: any) {
+        failList.push({ name: film.name, error: e.message || '导入失败' });
+      }
+    }
+
+    return {
+      total: films.length,
+      success: successList.length,
+      fail: failList.length,
+      skip: skipList.length,
+      successList,
+      failList,
+      skipList
+    };
+  }
+}