diff --git a/src/backend/ci/core/process/api-process/src/main/kotlin/com/tencent/devops/process/api/template/UserTemplateInstanceResource.kt b/src/backend/ci/core/process/api-process/src/main/kotlin/com/tencent/devops/process/api/template/UserTemplateInstanceResource.kt
index f043ab70888..eb305033a7c 100644
--- a/src/backend/ci/core/process/api-process/src/main/kotlin/com/tencent/devops/process/api/template/UserTemplateInstanceResource.kt
+++ b/src/backend/ci/core/process/api-process/src/main/kotlin/com/tencent/devops/process/api/template/UserTemplateInstanceResource.kt
@@ -38,14 +38,13 @@ import com.tencent.devops.process.pojo.PipelineId
 import com.tencent.devops.process.pojo.enums.TemplateSortTypeEnum
 import com.tencent.devops.process.pojo.template.TemplateCompareModelResult
 import com.tencent.devops.process.pojo.template.TemplateInstanceCreate
-import com.tencent.devops.process.pojo.template.TemplateInstancePage
 import com.tencent.devops.process.pojo.template.TemplateInstanceParams
 import com.tencent.devops.process.pojo.template.TemplateInstanceUpdate
-import com.tencent.devops.process.pojo.template.TemplateModelDetail
 import com.tencent.devops.process.pojo.template.TemplateOperationRet
+import com.tencent.devops.process.pojo.template.TemplateInstancePage
+import io.swagger.v3.oas.annotations.tags.Tag
 import io.swagger.v3.oas.annotations.Operation
 import io.swagger.v3.oas.annotations.Parameter
-import io.swagger.v3.oas.annotations.tags.Tag
 import javax.ws.rs.Consumes
 import javax.ws.rs.GET
 import javax.ws.rs.HeaderParam
@@ -206,20 +205,4 @@ interface UserTemplateInstanceResource {
         @QueryParam("desc")
         desc: Boolean?
     ): Result<TemplateInstancePage>
-
-    @Operation(summary = "复制流水线实例")
-    @GET
-    @Path("/projects/{projectId}/pipelines/{pipelineId}/copy")
-    @BkApiPermission([BkApiHandleType.API_NO_AUTH_CHECK])
-    fun copyTemplateInstance(
-        @Parameter(description = "用户ID", required = true, example = AUTH_HEADER_USER_ID_DEFAULT_VALUE)
-        @HeaderParam(AUTH_HEADER_USER_ID)
-        userId: String,
-        @Parameter(description = "项目ID", required = true)
-        @PathParam("projectId")
-        projectId: String,
-        @Parameter(description = "流水线ID", required = true)
-        @PathParam("pipelineId")
-        pipelineId: String
-    ): Result<TemplateModelDetail>
 }
diff --git a/src/backend/ci/core/process/biz-process/src/main/kotlin/com/tencent/devops/process/api/template/UserTemplateInstanceResourceImpl.kt b/src/backend/ci/core/process/biz-process/src/main/kotlin/com/tencent/devops/process/api/template/UserTemplateInstanceResourceImpl.kt
index 79c009610e4..58a7efaaedc 100644
--- a/src/backend/ci/core/process/biz-process/src/main/kotlin/com/tencent/devops/process/api/template/UserTemplateInstanceResourceImpl.kt
+++ b/src/backend/ci/core/process/biz-process/src/main/kotlin/com/tencent/devops/process/api/template/UserTemplateInstanceResourceImpl.kt
@@ -38,7 +38,6 @@ import com.tencent.devops.process.pojo.template.TemplateInstanceCreate
 import com.tencent.devops.process.pojo.template.TemplateInstancePage
 import com.tencent.devops.process.pojo.template.TemplateInstanceParams
 import com.tencent.devops.process.pojo.template.TemplateInstanceUpdate
-import com.tencent.devops.process.pojo.template.TemplateModelDetail
 import com.tencent.devops.process.pojo.template.TemplateOperationRet
 import com.tencent.devops.process.service.template.TemplateFacadeService
 import org.springframework.beans.factory.annotation.Autowired
@@ -166,18 +165,4 @@ class UserTemplateInstanceResourceImpl @Autowired constructor(
             )
         )
     }
-
-    override fun copyTemplateInstance(
-        userId: String,
-        projectId: String,
-        pipelineId: String
-    ): Result<TemplateModelDetail> {
-        return Result(
-            templateFacadeService.copyTemplateInstance(
-                userId = userId,
-                projectId = projectId,
-                pipelineId = pipelineId
-            )
-        )
-    }
 }
diff --git a/src/backend/ci/core/process/biz-process/src/main/kotlin/com/tencent/devops/process/service/template/TemplateFacadeService.kt b/src/backend/ci/core/process/biz-process/src/main/kotlin/com/tencent/devops/process/service/template/TemplateFacadeService.kt
index bc4919dc28f..e7bb18cd178 100644
--- a/src/backend/ci/core/process/biz-process/src/main/kotlin/com/tencent/devops/process/service/template/TemplateFacadeService.kt
+++ b/src/backend/ci/core/process/biz-process/src/main/kotlin/com/tencent/devops/process/service/template/TemplateFacadeService.kt
@@ -2586,43 +2586,6 @@ class TemplateFacadeService @Autowired constructor(
         return pipelineTemplatePermissionService.enableTemplatePermissionManage(projectId)
     }
 
-    /**
-     * 复制流水线实例
-     *
-     * 复制流水线参数
-     */
-    fun copyTemplateInstance(
-        userId: String,
-        projectId: String,
-        pipelineId: String
-    ): TemplateModelDetail {
-        val templatePipelineRecord = templatePipelineDao.get(dslContext, projectId, pipelineId)
-            ?: throw NotFoundException(
-                I18nUtil.getCodeLanMessage(
-                    messageCode = ERROR_TEMPLATE_NOT_EXISTS,
-                    language = I18nUtil.getLanguage(userId)
-                )
-            )
-        val templateModelDetail =
-            getTemplate(projectId, userId, templatePipelineRecord.templateId, templatePipelineRecord.version)
-
-        val templateParams = (templateModelDetail.template.stages[0].containers[0] as TriggerContainer).templateParams
-        val templateParamIdMap = templateParams?.map { it.id } ?: emptyList()
-
-        val instanceModel: Model = objectMapper.readValue(
-            pipelineResourceDao.getVersionModelString(dslContext, projectId, pipelineId, null)
-                ?: throw ErrorCodeException(
-                    statusCode = Response.Status.NOT_FOUND.statusCode,
-                    errorCode = ProcessMessageCode.ERROR_PIPELINE_MODEL_NOT_EXISTS
-                )
-        )
-        val instanceParams = (instanceModel.stages[0].containers[0] as TriggerContainer).params
-        return templateModelDetail.copy(
-            // 流水线参数排除模板常量
-            params = instanceParams.filterNot { templateParamIdMap.contains(it.id) }
-        )
-    }
-
     companion object {
         private val logger = LoggerFactory.getLogger(TemplateFacadeService::class.java)
         private const val INIT_TEMPLATE_NAME = "init"