diff --git a/app/controllers/api/v1/issues/issue_priorities_controller.rb b/app/controllers/api/v1/issues/issue_priorities_controller.rb
new file mode 100644
index 00000000..d26d8f3a
--- /dev/null
+++ b/app/controllers/api/v1/issues/issue_priorities_controller.rb
@@ -0,0 +1,9 @@
+class Api::V1::Issues::IssuePrioritiesController < Api::V1::BaseController 
+
+  before_action :require_public_and_member_above, only: [:index]
+
+  def index 
+    @priorities = IssuePriority.order(position: :asc)
+    @priorities = kaminary_select_paginate(@priorities)
+  end
+end
\ No newline at end of file
diff --git a/app/controllers/api/v1/projects/collaborators_controller.rb b/app/controllers/api/v1/projects/collaborators_controller.rb
new file mode 100644
index 00000000..67a96378
--- /dev/null
+++ b/app/controllers/api/v1/projects/collaborators_controller.rb
@@ -0,0 +1,10 @@
+class Api::V1::Projects::CollaboratorsController < Api::V1::BaseController 
+
+  before_action :require_public_and_member_above, only: [:index]
+
+  def index 
+    @collaborators = @project.all_collaborators.ransack(name_or_login_cont: params[:keyword]).result
+    @collaborators = kaminary_select_paginate(@collaborators)
+  end
+
+end
\ No newline at end of file
diff --git a/app/views/api/v1/issues/_simple_detail.json.jbuilder b/app/views/api/v1/issues/_simple_detail.json.jbuilder
index da1bdfcb..a33cde4c 100644
--- a/app/views/api/v1/issues/_simple_detail.json.jbuilder
+++ b/app/views/api/v1/issues/_simple_detail.json.jbuilder
@@ -17,4 +17,4 @@ end
 json.assigners issue.assigners.each do |assigner| 
   json.partial! "api/v1/users/simple_user", locals: {user: assigner}
 end
-json.journals_count issue.comment_journals.size
\ No newline at end of file
+json.comment_journals_count issue.comment_journals.size
\ No newline at end of file
diff --git a/app/views/api/v1/issues/issue_priorities/index.json.jbuilder b/app/views/api/v1/issues/issue_priorities/index.json.jbuilder
new file mode 100644
index 00000000..41499d45
--- /dev/null
+++ b/app/views/api/v1/issues/issue_priorities/index.json.jbuilder
@@ -0,0 +1,4 @@
+json.total_count @priorities.total_count 
+json.priorities @priorities.each do |priority|
+  json.(priority, :id, :name)
+end
\ No newline at end of file
diff --git a/app/views/api/v1/projects/collaborators/index.json.jbuilder b/app/views/api/v1/projects/collaborators/index.json.jbuilder
new file mode 100644
index 00000000..c0c33c6b
--- /dev/null
+++ b/app/views/api/v1/projects/collaborators/index.json.jbuilder
@@ -0,0 +1,4 @@
+json.total_count @collaborators.total_count
+json.collaborators @collaborators.each do |collaborator|
+  json.partial! "api/v1/users/simple_user", locals: {user: collaborator}
+end
\ No newline at end of file
diff --git a/config/routes/api.rb b/config/routes/api.rb
index 657ca52b..e4994f52 100644
--- a/config/routes/api.rb
+++ b/config/routes/api.rb
@@ -26,13 +26,14 @@ defaults format: :json do
           end
 
           resources :issues
-            scope module: :issues do 
-              resources :issue_tags, only: [:index]
-              resources :milestones, except: [:new, :edit]
-              resources :issue_statues, only: [:index], controller: '/api/v1/issues/statues'
-              resources :issue_authors, only: [:index], controller: '/api/v1/issues/authors'
-              resources :issue_assigners, only: [:index], controller: '/api/v1/issues/assigners'
-            end
+          scope module: :issues do 
+            resources :issue_tags, only: [:index]
+            resources :milestones, except: [:new, :edit]
+            resources :issue_statues, only: [:index], controller: '/api/v1/issues/statues'
+            resources :issue_authors, only: [:index], controller: '/api/v1/issues/authors'
+            resources :issue_assigners, only: [:index], controller: '/api/v1/issues/assigners'
+            resources :issue_priorities, only: [:index]
+          end
 
           # projects文件夹下的
           scope module: :projects do 
@@ -45,7 +46,7 @@ defaults format: :json do
               resources :journals, except: [:show, :edit]
               resources :reviews, only: [:index, :create] 
             end
-
+            resources :collaborators, only: [:index]
             resources :release_versions
             resources :webhooks do 
               member do