diff --git a/README.md b/README.md
index 00a19a0..2621b40 100644
--- a/README.md
+++ b/README.md
@@ -309,7 +309,7 @@ go run github.com/swaggo/swag/cmd/swag@v1.16.6 init -g main.go
 | DELETE | `/api/project-orders/:serialNumber` | 删除项目工单 | 是 | 管理员 |
 
 **项目工单特点**:
-- 用于现场勘查、现场实施等项目任务
+- 用于项目勘察、工程实施、定期维保、商务合作等项目任务
 - 工单号格式: `zjbf-xm-YYMMDDNN`
 - 现场图片最多 18 张
 - 仅需要工程师签名，无客户签字环节
diff --git a/docs/docs.go b/docs/docs.go
index 2f98681..96b111d 100644
--- a/docs/docs.go
+++ b/docs/docs.go
@@ -2352,6 +2352,7 @@ const docTemplate = `{
                         "survey",
                         "implementation",
                         "maintenance",
+                        "business",
                         "other"
                     ]
                 },
@@ -2743,6 +2744,7 @@ const docTemplate = `{
                         "survey",
                         "implementation",
                         "maintenance",
+                        "business",
                         "other"
                     ]
                 },
diff --git a/docs/swagger.json b/docs/swagger.json
index cb718d6..cf31759 100644
--- a/docs/swagger.json
+++ b/docs/swagger.json
@@ -2346,6 +2346,7 @@
                         "survey",
                         "implementation",
                         "maintenance",
+                        "business",
                         "other"
                     ]
                 },
@@ -2737,6 +2738,7 @@
                         "survey",
                         "implementation",
                         "maintenance",
+                        "business",
                         "other"
                     ]
                 },
diff --git a/docs/swagger.yaml b/docs/swagger.yaml
index ef220c0..1841f34 100644
--- a/docs/swagger.yaml
+++ b/docs/swagger.yaml
@@ -80,6 +80,7 @@ definitions:
         - survey
         - implementation
         - maintenance
+        - business
         - other
         type: string
       siteDescription:
@@ -348,6 +349,7 @@ definitions:
         - survey
         - implementation
         - maintenance
+        - business
         - other
         type: string
       siteDescription:
diff --git a/models/models.go b/models/models.go
index f142142..800eef0 100644
--- a/models/models.go
+++ b/models/models.go
@@ -401,7 +401,7 @@ type CreateProjectOrderDTO struct {
 	CompanyAddress  string `json:"companyAddress" validate:"required"`
 	ContactName     string `json:"contactName" validate:"required"`
 	ContactPhone    string `json:"contactPhone" validate:"required,len=11"`
-	ProjectType     string `json:"projectType" validate:"required,oneof=survey implementation maintenance other"`
+	ProjectType     string `json:"projectType" validate:"required,oneof=survey implementation maintenance business other"`
 	SiteDescription string `json:"siteDescription" validate:"required"`
 	TechnicianID    *uint  `json:"technicianId,omitempty"`
 }
@@ -411,7 +411,7 @@ type UpdateProjectOrderDTO struct {
 	CompanyAddress  string `json:"companyAddress,omitempty"`
 	ContactName     string `json:"contactName,omitempty"`
 	ContactPhone    string `json:"contactPhone,omitempty" validate:"omitempty,len=11"`
-	ProjectType     string `json:"projectType,omitempty" validate:"omitempty,oneof=survey implementation maintenance other"`
+	ProjectType     string `json:"projectType,omitempty" validate:"omitempty,oneof=survey implementation maintenance business other"`
 	SiteDescription string `json:"siteDescription,omitempty"`
 	CompletionNote  string `json:"completionNote,omitempty"`
 	TechnicianID    *uint  `json:"technicianId,omitempty"`