diff --git a/src/views/settings/workflow/component/modelParamUtils.ts b/src/views/settings/workflow/component/modelParamUtils.ts
index 28cf8f0..4b944e6 100644
--- a/src/views/settings/workflow/component/modelParamUtils.ts
+++ b/src/views/settings/workflow/component/modelParamUtils.ts
@@ -193,6 +193,35 @@ export interface ExposedField {
 	refNodeId?: string; // 预留：引用其他节点功能（后续启用）
 }
 
+// 将模型模板字段级约束（constraint，JsonEditor 风格：min/max/uploadRules/accept/maxSize/maxCount 等）
+// 归一化为首页运行表单消费的 fieldConstraint（minValue/maxValue/fileTypes/maxFileSize/maxFileCount）。
+// 模板字段约束实际挂在 constraint 键下（如 video_url.url 的 uploadRules、duration 的 min/numberType），
+// 与 collectExposedFields 原读取的 fieldConstraint 键不一致，需在此转换后随 modelFormFields 透传首页。
+function toFieldConstraint(constraint: any): any {
+	if (!constraint || typeof constraint !== 'object') return undefined;
+	const out: Record<string, any> = {};
+	// 数字 min/max → 首页 el-input-number 的 minValue/maxValue
+	if (constraint.min !== undefined && constraint.min !== null) out.minValue = constraint.min;
+	if (constraint.max !== undefined && constraint.max !== null) out.maxValue = constraint.max;
+	// 上传约束：uploadRules 数组取第一条；兼容顶层 accept/maxSize/maxCount 单值形式
+	const rules = Array.isArray(constraint.uploadRules) ? constraint.uploadRules.filter((r: any) => r && typeof r === 'object') : [];
+	const rule = rules[0] || null;
+	const fileTypes = rule?.format ?? constraint.accept;
+	if (fileTypes !== undefined && fileTypes !== null && fileTypes !== '') {
+		// 模板 format 可能用中文顿号/空白分隔（如 wan 模型 "wav、mp3"），
+		// 统一转英文逗号，保证首页 split(',') 与扩展名匹配正确
+		out.fileTypes = String(fileTypes)
+			.replace(/[、\s]+/g, ',')
+			.replace(/,+/g, ',')
+			.replace(/^,|,$/g, '');
+	}
+	const maxSize = rule?.maxSize ?? constraint.maxSize;
+	if (maxSize !== undefined && maxSize !== null) out.maxFileSize = maxSize;
+	const maxCount = rule?.maxCount ?? constraint.maxCount;
+	if (maxCount !== undefined && maxCount !== null) out.maxFileCount = maxCount;
+	return Object.keys(out).length > 0 ? out : undefined;
+}
+
 // 收集 runtimeShow === true 的叶子字段，生成暴露清单
 // 路径文法（与 restoreRuntimeShow 共用）：
 //   object 子字段 → 父路径 + ".attrs." + 子key
@@ -234,7 +263,10 @@ export function collectExposedFields(params: any, prefix = ''): ExposedField[] {
 				options: Array.isArray(def.options) ? def.options : undefined,
 				value: def.value,
 				defaultValue: def.defaultValue,
-				fieldConstraint: def.fieldConstraint && typeof def.fieldConstraint === 'object' ? def.fieldConstraint : undefined,
+				// 优先透传已有的 fieldConstraint（首页格式）；模板字段约束在 constraint 键时归一化补全
+				fieldConstraint:
+					(def.fieldConstraint && typeof def.fieldConstraint === 'object' ? def.fieldConstraint : undefined) ??
+					toFieldConstraint(def.constraint),
 				valueSource: (() => {
 					const vs = def.valueSource;
 					// 契约统一数组；兼容旧 DSL 单对象 { nodeId, field }