diff --git a/backend/app/api/routes/admin_certificates.py b/backend/app/api/routes/admin_certificates.py
index 99402df..7afbfe3 100644
--- a/backend/app/api/routes/admin_certificates.py
+++ b/backend/app/api/routes/admin_certificates.py
@@ -85,7 +85,7 @@ def create_certificate(
         course_start_date=payload.course_start_date,
         course_end_date=payload.course_end_date,
         issue_date=payload.issue_date,
-        issuer_name=payload.issuer_name or project.default_issuer_name,
+        issuer_name=project.default_issuer_name,
         remark=payload.remark,
     )
     db.add(certificate)
diff --git a/backend/app/schemas/certificate.py b/backend/app/schemas/certificate.py
index 395004a..ed05d4d 100644
--- a/backend/app/schemas/certificate.py
+++ b/backend/app/schemas/certificate.py
@@ -13,7 +13,6 @@ class CertificateCreate(BaseModel):
     course_start_date: date
     course_end_date: date
     issue_date: date
-    issuer_name: str = Field(min_length=1, max_length=128)
     remark: str | None = None
 
     @field_validator("project_code")
diff --git a/backend/tests/test_import_rules.py b/backend/tests/test_import_rules.py
index c790846..ba8d297 100644
--- a/backend/tests/test_import_rules.py
+++ b/backend/tests/test_import_rules.py
@@ -84,5 +84,16 @@ def test_certificate_create_rejects_reversed_course_period():
             course_start_date="2026-06-30",
             course_end_date="2026-06-01",
             issue_date="2026-07-05",
-            issuer_name="测试单位",
         )
+
+
+def test_certificate_create_uses_project_issuer_without_manual_input():
+    certificate = CertificateCreate(
+        learner_id=1,
+        project_code="DBY",
+        course_start_date="2026-06-01",
+        course_end_date="2026-06-30",
+        issue_date="2026-07-05",
+    )
+
+    assert "issuer_name" not in certificate.model_dump()
diff --git a/frontend/src/views/AdminCertificates.vue b/frontend/src/views/AdminCertificates.vue
index 7c4445c..58aec6e 100644
--- a/frontend/src/views/AdminCertificates.vue
+++ b/frontend/src/views/AdminCertificates.vue
@@ -35,9 +35,6 @@
           <el-input v-model.trim="form.stage_name" placeholder="如：全部、初级、中级" />
           <div class="form-tip">证书上将显示为「{输入内容}课程的专业学习」，留空则默认显示「初级课程的专业学习」</div>
         </el-form-item>
-        <el-form-item label="发证单位">
-          <el-input v-model.trim="form.issuer_name" />
-        </el-form-item>
         <el-form-item label="备注">
           <el-input v-model.trim="form.remark" />
         </el-form-item>
@@ -174,7 +171,6 @@ const form = reactive({
   course_start_date: "",
   course_end_date: "",
   issue_date: "",
-  issuer_name: "",
   remark: "",
 });
 
@@ -223,8 +219,8 @@ function handleSelectionChange(rows: AdminCertificate[]) {
 }
 
 async function createCertificate() {
-  if (!form.learner_id || !form.project_code || !form.course_start_date || !form.course_end_date || !form.issue_date || !form.issuer_name) {
-    ElMessage.warning("请填写学员ID、项目、课程起止日期、发证日期和发证单位");
+  if (!form.learner_id || !form.project_code || !form.course_start_date || !form.course_end_date || !form.issue_date) {
+    ElMessage.warning("请填写学员ID、项目、课程起止日期和发证日期");
     return;
   }
   if (form.course_end_date < form.course_start_date) {
@@ -239,7 +235,6 @@ async function createCertificate() {
     course_start_date: form.course_start_date,
     course_end_date: form.course_end_date,
     issue_date: form.issue_date,
-    issuer_name: form.issuer_name,
     remark: form.remark || null,
   });
   ElMessage.success("证书已创建");