diff --git a/server/cmd/promotion-import/main.go b/server/cmd/promotion-import/main.go
index 7c2b348..a9768dc 100644
--- a/server/cmd/promotion-import/main.go
+++ b/server/cmd/promotion-import/main.go
@@ -57,11 +57,12 @@ func mimeForExt(ext string) string {
 	}
 }
 
-// importRule：按顺序尝试 SrcRels；若均不存在且 FallbackScanDir 非空，则在该子目录下「仅一个 .mov/.jpg 时」自动选用（兼容实际文件夹命名与文件名不一致）
+// importRule：按顺序尝试 SrcRels；再 FallbackScanDir 下智能选文件；EpisodeScan 在非空时扫描 视频发布 下含「实例+一/二」的子目录（兼容半角括号、文件夹名略有差异）
 type importRule struct {
 	SrcRels         []string
 	Dst             string
-	FallbackScanDir string // 相对 视频发布/，仅当目标为视频时用 .mov；封面用 .jpg
+	FallbackScanDir string
+	EpisodeScan     string // "一" 或 "二"
 }
 
 // 与 sync-video-assets-to-social.sh 对齐，并增加备选路径（线上常见「实例（一）」内不叫宣传片.mov 的情况）
@@ -69,25 +70,155 @@ var mappings = []importRule{
 	{[]string{
 		"宇恒一号操作计算软件实例（一）/宣传片-封面.jpg",
 		"宇恒一号操作计算软件实例（一）/宇恒一号操作计算软件实例（一）-封面.jpg",
-	}, "video-calc-demo-1-cover.jpg", "宇恒一号操作计算软件实例（一）"},
+		"宇恒一号操作计算软件实例(一)/宣传片-封面.jpg",
+		"宇恒一号操作计算软件实例(一)/宇恒一号操作计算软件实例(一)-封面.jpg",
+	}, "video-calc-demo-1-cover.jpg", "宇恒一号操作计算软件实例（一）", "一"},
 	{[]string{
 		"宇恒一号操作计算软件实例（一）/宣传片.mov",
 		"宇恒一号操作计算软件实例（一）/宇恒一号操作计算软件实例（一）.mov",
-	}, "video-calc-demo-1.mov", "宇恒一号操作计算软件实例（一）"},
+		"宇恒一号操作计算软件实例(一)/宣传片.mov",
+		"宇恒一号操作计算软件实例(一)/宇恒一号操作计算软件实例(一).mov",
+	}, "video-calc-demo-1.mov", "宇恒一号操作计算软件实例（一）", "一"},
 	{[]string{
 		"宇恒一号操作计算软件实例（二）/宇恒一号操作计算软件实例（二）-封面.jpg",
 		"宇恒一号操作计算软件实例（二）/宣传片-封面.jpg",
-	}, "video-calc-demo-2-cover.jpg", "宇恒一号操作计算软件实例（二）"},
+		"宇恒一号操作计算软件实例(二)/宇恒一号操作计算软件实例(二)-封面.jpg",
+		"宇恒一号操作计算软件实例(二)/宣传片-封面.jpg",
+	}, "video-calc-demo-2-cover.jpg", "宇恒一号操作计算软件实例（二）", "二"},
 	{[]string{
 		"宇恒一号操作计算软件实例（二）/宇恒一号操作计算软件实例（二）.mov",
 		"宇恒一号操作计算软件实例（二）/宣传片.mov",
-	}, "video-calc-demo-2.mov", "宇恒一号操作计算软件实例（二）"},
-	{[]string{"宇恒一号AIWord简介/宇恒一号AIWord简介-封面.jpg"}, "video-aiword-cover.jpg", "宇恒一号AIWord简介"},
-	{[]string{"宇恒一号AIWord简介/宇恒一号AIWord简介.mov"}, "video-aiword.mov", "宇恒一号AIWord简介"},
-	{[]string{"宇恒一号语音办公实例/宇恒一号语音办公实例-封面.jpg"}, "video-voice-office-cover.jpg", "宇恒一号语音办公实例"},
-	{[]string{"宇恒一号语音办公实例/宇恒一号语音办公实例.mov"}, "video-voice-office.mov", "宇恒一号语音办公实例"},
-	{[]string{"宇恒一号，AI 全自动办发票/宇恒一号，AI 全自动办发票-封面.jpg"}, "video-invoice-ai-cover.jpg", "宇恒一号，AI 全自动办发票"},
-	{[]string{"宇恒一号，AI 全自动办发票/宇恒一号，AI 全自动办发票.mov"}, "video-invoice-ai.mov", "宇恒一号，AI 全自动办发票"},
+		"宇恒一号操作计算软件实例(二)/宇恒一号操作计算软件实例(二).mov",
+		"宇恒一号操作计算软件实例(二)/宣传片.mov",
+	}, "video-calc-demo-2.mov", "宇恒一号操作计算软件实例（二）", "二"},
+	{[]string{"宇恒一号AIWord简介/宇恒一号AIWord简介-封面.jpg"}, "video-aiword-cover.jpg", "宇恒一号AIWord简介", ""},
+	{[]string{"宇恒一号AIWord简介/宇恒一号AIWord简介.mov"}, "video-aiword.mov", "宇恒一号AIWord简介", ""},
+	{[]string{"宇恒一号语音办公实例/宇恒一号语音办公实例-封面.jpg"}, "video-voice-office-cover.jpg", "宇恒一号语音办公实例", ""},
+	{[]string{"宇恒一号语音办公实例/宇恒一号语音办公实例.mov"}, "video-voice-office.mov", "宇恒一号语音办公实例", ""},
+	{[]string{"宇恒一号，AI 全自动办发票/宇恒一号，AI 全自动办发票-封面.jpg"}, "video-invoice-ai-cover.jpg", "宇恒一号，AI 全自动办发票", ""},
+	{[]string{"宇恒一号，AI 全自动办发票/宇恒一号，AI 全自动办发票.mov"}, "video-invoice-ai.mov", "宇恒一号，AI 全自动办发票", ""},
+}
+
+// 在 视频发布 下找名称同时含「实例」与「（一）」或「(一)」等的子目录（排除另一集）
+func discoverEpisodeDir(videoPublish, episode string) (dirName string, ok bool) {
+	full := "（" + episode + "）"
+	half := "(" + episode + ")"
+	entries, err := os.ReadDir(videoPublish)
+	if err != nil {
+		return "", false
+	}
+	var hits []string
+	for _, e := range entries {
+		if !e.IsDir() {
+			continue
+		}
+		n := e.Name()
+		if !strings.Contains(n, "实例") {
+			continue
+		}
+		marked := strings.Contains(n, full) || strings.Contains(n, half)
+		if !marked {
+			continue
+		}
+		if episode == "一" && (strings.Contains(n, "（二）") || strings.Contains(n, "(二)")) {
+			continue
+		}
+		if episode == "二" && (strings.Contains(n, "（一）") || strings.Contains(n, "(一)")) {
+			continue
+		}
+		hits = append(hits, n)
+	}
+	if len(hits) == 0 {
+		return "", false
+	}
+	if len(hits) == 1 {
+		return hits[0], true
+	}
+	for _, h := range hits {
+		if strings.Contains(h, "软件") {
+			return h, true
+		}
+	}
+	return hits[0], true
+}
+
+func pickMediaInDir(videoPublish, dirName string, dstFile string) (absPath, relChosen string, ok bool) {
+	ext := strings.ToLower(filepath.Ext(dstFile))
+	if ext != ".mov" && ext != ".jpg" && ext != ".jpeg" {
+		return "", "", false
+	}
+	dir := filepath.Join(videoPublish, filepath.FromSlash(dirName))
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return "", "", false
+	}
+	type cand struct {
+		name string
+		size int64
+	}
+	var movs, imgs []cand
+	for _, e := range entries {
+		if e.IsDir() {
+			continue
+		}
+		ne := strings.ToLower(filepath.Ext(e.Name()))
+		p := filepath.Join(dir, e.Name())
+		st, err := os.Stat(p)
+		if err != nil {
+			continue
+		}
+		sz := st.Size()
+		if ne == ".mov" {
+			movs = append(movs, cand{e.Name(), sz})
+		}
+		if ne == ".jpg" || ne == ".jpeg" {
+			imgs = append(imgs, cand{e.Name(), sz})
+		}
+	}
+	pickMov := func() (string, bool) {
+		if len(movs) == 0 {
+			return "", false
+		}
+		best := movs[0]
+		for _, c := range movs[1:] {
+			if c.size > best.size {
+				best = c
+			}
+		}
+		return best.name, true
+	}
+	pickImg := func() (string, bool) {
+		if len(imgs) == 0 {
+			return "", false
+		}
+		for _, c := range imgs {
+			if strings.Contains(c.name, "封面") {
+				return c.name, true
+			}
+		}
+		best := imgs[0]
+		for _, c := range imgs[1:] {
+			if c.size > best.size {
+				best = c
+			}
+		}
+		return best.name, true
+	}
+	var name string
+	var found bool
+	switch ext {
+	case ".mov":
+		name, found = pickMov()
+	case ".jpg", ".jpeg":
+		name, found = pickImg()
+	default:
+		return "", "", false
+	}
+	if !found {
+		return "", "", false
+	}
+	rel := filepath.ToSlash(filepath.Join(dirName, name))
+	return filepath.Join(videoPublish, filepath.FromSlash(rel)), rel, true
 }
 
 func resolveSourceFile(videoPublish string, rule importRule) (absPath, relChosen string, ok bool) {
@@ -97,37 +228,31 @@ func resolveSourceFile(videoPublish string, rule importRule) (absPath, relChosen
 			return p, rel, true
 		}
 	}
-	if rule.FallbackScanDir == "" {
-		return "", "", false
+	tryDirs := []string{}
+	if rule.FallbackScanDir != "" {
+		tryDirs = append(tryDirs, rule.FallbackScanDir)
 	}
-	ext := strings.ToLower(filepath.Ext(rule.Dst))
-	if ext != ".mov" && ext != ".jpg" && ext != ".jpeg" {
-		return "", "", false
-	}
-	dir := filepath.Join(videoPublish, filepath.FromSlash(rule.FallbackScanDir))
-	entries, err := os.ReadDir(dir)
-	if err != nil {
-		return "", "", false
-	}
-	var matches []string
-	for _, e := range entries {
-		if e.IsDir() {
-			continue
-		}
-		ne := strings.ToLower(filepath.Ext(e.Name()))
-		if ext == ".mov" && ne == ".mov" {
-			matches = append(matches, e.Name())
-		}
-		if (ext == ".jpg" || ext == ".jpeg") && (ne == ".jpg" || ne == ".jpeg") {
-			matches = append(matches, e.Name())
+	if rule.EpisodeScan != "" {
+		if d, ok := discoverEpisodeDir(videoPublish, rule.EpisodeScan); ok {
+			// 避免与固定目录重复
+			dup := false
+			for _, x := range tryDirs {
+				if x == d {
+					dup = true
+					break
+				}
+			}
+			if !dup {
+				tryDirs = append(tryDirs, d)
+			}
 		}
 	}
-	if len(matches) != 1 {
-		return "", "", false
+	for _, dirName := range tryDirs {
+		if abs, rel, ok := pickMediaInDir(videoPublish, dirName, rule.Dst); ok {
+			return abs, rel, true
+		}
 	}
-	rel := filepath.ToSlash(filepath.Join(rule.FallbackScanDir, matches[0]))
-	p := filepath.Join(videoPublish, filepath.FromSlash(rel))
-	return p, rel, true
+	return "", "", false
 }
 
 func main() {
@@ -202,7 +327,7 @@ func main() {
 	for _, m := range mappings {
 		from, srcRelUsed, found := resolveSourceFile(videoPublish, m)
 		if !found {
-			log.Printf("SKIP 源文件不存在（已试备选路径）: dst=%s dir=%s", m.Dst, m.FallbackScanDir)
+			log.Printf("SKIP 源文件不存在（已试备选路径/扫描子目录）: dst=%s episode=%s", m.Dst, m.EpisodeScan)
 			skip++
 			continue
 		}