diff --git a/internal/ingest/parse.go b/internal/ingest/parse.go
new file mode 100644
index 0000000..eca6759
--- /dev/null
+++ b/internal/ingest/parse.go
@@ -0,0 +1,45 @@
+package ingest
+
+import "strings"
+
+// ParseCollection 从走秀标题解析出 collection_type 与 season。
+//
+// 仅输出后端白名单枚举（与 backend_v2/internal/pkg/season.Derive 一致）：
+//   collection_type ∈ {rtw, menswear, couture, resort, pre_fall}
+//   season          ∈ {spring, fall}（resort/pre_fall 无 spring/fall 词，season 留空，由 Derive 按 collection 前缀补码）
+//
+// 常见 Vogue 标题形态：
+//   "Fall 2024 Ready-to-Wear"  → (rtw, fall)
+//   "Spring 2024 Menswear"     → (menswear, spring)
+//   "Fall 2024 Couture"        → (couture, fall)
+//   "Resort 2024"              → (resort, "")
+//   "Pre-Fall 2024"            → (pre_fall, "")
+// "Cruise" 视作 resort 的同义表述（Vogue 两词混用）；未识别到系列词时兜底为 rtw（成衣）。
+func ParseCollection(title string) (collectionType, season string) {
+	t := strings.ToLower(title)
+
+	// season：仅 spring / fall 两种
+	switch {
+	case strings.Contains(t, "spring"):
+		season = "spring"
+	case strings.Contains(t, "fall"):
+		season = "fall"
+	}
+
+	// collection_type：按关键字优先级匹配，最后兜底 rtw
+	switch {
+	case strings.Contains(t, "menswear"), strings.Contains(t, "men's"):
+		collectionType = "menswear"
+	case strings.Contains(t, "couture"):
+		collectionType = "couture"
+	case strings.Contains(t, "resort"), strings.Contains(t, "cruise"):
+		collectionType = "resort"
+	case strings.Contains(t, "pre-fall"), strings.Contains(t, "pre fall"), strings.Contains(t, "prefall"):
+		collectionType = "pre_fall"
+	case strings.Contains(t, "ready-to-wear"), strings.Contains(t, "ready to wear"), strings.Contains(t, "rtw"):
+		collectionType = "rtw"
+	default:
+		collectionType = "rtw"
+	}
+	return collectionType, season
+}