diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index c3a750cb3..8734964f3 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -2,8 +2,9 @@ class ProjectsController < ApplicationController
   include ApplicationHelper
   include OperateProjectAbilityAble
   before_action :require_login, except: %i[index branches group_type_list]
-  before_action :find_project_with_id, only: %i[show branches update destroy]
+  before_action :find_project_with_id, only: %i[show branches update destroy fork_users praise_users watch_user]
   before_action :authorizate_user_can_edit_project!, only: %i[update]
+  before_action :project_public?, only: %i[fork_users praise_users watch_user]
 
   def index
     scope = Projects::ListQuery.call(params)
@@ -81,6 +82,21 @@ class ProjectsController < ApplicationController
     tip_exception(e.message)
   end
 
+  def watch_users
+    watchers = @project.watchers.includes(:user).distinct
+    @watchers = paginate(watchers)
+  end
+
+  def parise_users
+    praises = @project.praise_treads.includes(:user).distinct
+    @praises = paginate(praises)
+  end
+
+  def fork_users 
+    fork_users = @project.fork_users.includes(:user, :project).distinct 
+    @fork_users = paginate(fork_users)
+  end
+
   private
   def project_params
     params.permit(:user_id, :name, :description, :repository_name,
@@ -91,4 +107,10 @@ class ProjectsController < ApplicationController
     params.permit(:user_id, :name, :description, :repository_name,
                   :project_category_id, :project_language_id, :clone_addr, :private)
   end
+
+  def project_public? 
+    unless @project.is_public || current_user&admin?
+      tip_exception(403, "..")
+    end
+  end
 end
diff --git a/app/models/concerns/watchable.rb b/app/models/concerns/watchable.rb
index ad707a0cf..4c52cf99a 100644
--- a/app/models/concerns/watchable.rb
+++ b/app/models/concerns/watchable.rb
@@ -13,7 +13,7 @@ module Watchable
   end
 
   def watch!(watchable)
-    watchable.watchers.create!(user: self)
+    watchable.watchers.create!(user: self, created_at: Time.current)
   end
 
   def unwatch!(watchable)
diff --git a/app/models/fork_user.rb b/app/models/fork_user.rb
new file mode 100644
index 000000000..10ae32328
--- /dev/null
+++ b/app/models/fork_user.rb
@@ -0,0 +1,4 @@
+class ForkUser < ApplicationRecord
+  belongs_to :project 
+  belongs_to :user
+end
diff --git a/app/models/project.rb b/app/models/project.rb
index b02b89e81..0df17cd0a 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -12,6 +12,8 @@ class Project < ApplicationRecord
   belongs_to :project_category, optional: true , :counter_cache => true
   belongs_to :project_language, optional: true , :counter_cache => true
   has_many :project_trends, dependent: :destroy
+  has_many :watchers, as: :watchable, dependent: :destroy
+  has_many :fork_users, dependent: :destroy
 
   # has_many :commits, dependent: :destroy
 
diff --git a/app/models/user.rb b/app/models/user.rb
index e729b898e..859c02986 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -51,6 +51,7 @@ class User < ApplicationRecord
   has_one :wechat_open_user, class_name: 'OpenUsers::Wechat'
   has_one :qq_open_user, class_name: 'OpenUsers::QQ'
   accepts_nested_attributes_for :user_extension, update_only: true
+  has_many :fork_users, dependent: :destroy
 
   has_many :versions
   has_many :issue_times, :dependent => :destroy
diff --git a/app/views/projects/_list_user.json.jbuilder b/app/views/projects/_list_user.json.jbuilder
new file mode 100644
index 000000000..3e457486f
--- /dev/null
+++ b/app/views/projects/_list_user.json.jbuilder
@@ -0,0 +1,8 @@
+user = target.user 
+
+json.format_time target.created_at.strftime("%Y-%m-%d")
+json.name user.try(:show_real_name)
+json.login user.try(:login)
+json.image_url url_to_avatar(user)
+json.is_current_user current_user.try(:id) == target.user_id
+json.is_watch current_user&.watched?(user)
diff --git a/app/views/projects/fork_users.json.jbuilder b/app/views/projects/fork_users.json.jbuilder
new file mode 100644
index 000000000..b08eafdaf
--- /dev/null
+++ b/app/views/projects/fork_users.json.jbuilder
@@ -0,0 +1,12 @@
+json.count @fork_users.size 
+json.fork_users do 
+  json.array! @fork_users.each do |f|
+    user = f.user 
+    fork_project = Project.select(:id,).find_by(f.fork_project_id)
+    json.id f.fork_project_id
+    json.name "#{user.try(:show_real_name)}/#{fork_project.name}"
+    json.login user.try(:login)
+    json.image_url url_to_avatar(user)
+    json.format_time f.created_at.strftime("%Y-%m-%d")
+  end
+end
\ No newline at end of file
diff --git a/app/views/projects/praise_users.json.jbuilder b/app/views/projects/praise_users.json.jbuilder
new file mode 100644
index 000000000..9d7cb2cdc
--- /dev/null
+++ b/app/views/projects/praise_users.json.jbuilder
@@ -0,0 +1,4 @@
+json.count @praises.size
+json.praises do 
+  json.partial! "/projects/list_user", collection: @praises, as: :target
+end
\ No newline at end of file
diff --git a/app/views/projects/watch_users.json.jbuilder b/app/views/projects/watch_users.json.jbuilder
new file mode 100644
index 000000000..af65c9c97
--- /dev/null
+++ b/app/views/projects/watch_users.json.jbuilder
@@ -0,0 +1,4 @@
+json.cout @watch_users.size 
+json.watchers do 
+  json.partial! "/projects/list_user", collection: @watch_user, as: :target
+end
\ No newline at end of file
diff --git a/db/migrate/20200515080705_add_created_at_to_watcher.rb b/db/migrate/20200515080705_add_created_at_to_watcher.rb
new file mode 100644
index 000000000..f44039c9c
--- /dev/null
+++ b/db/migrate/20200515080705_add_created_at_to_watcher.rb
@@ -0,0 +1,6 @@
+class AddCreatedAtToWatcher < ActiveRecord::Migration[5.2]
+  def change
+    add_column :watchers, :created_at, :datetime
+    Watcher.update_all(created_at: Time.current)
+  end
+end
diff --git a/db/migrate/20200515082628_create_fork_users.rb b/db/migrate/20200515082628_create_fork_users.rb
new file mode 100644
index 000000000..9900095d0
--- /dev/null
+++ b/db/migrate/20200515082628_create_fork_users.rb
@@ -0,0 +1,17 @@
+class CreateForkUsers < ActiveRecord::Migration[5.2]
+  def change
+    create_table :fork_users do |t|
+      t.integer :project_id  #原始项目id
+      t.integer :fork_project_id  #fork后的项目id
+      t.integer :user_id   #fork用户的id
+      t.timestamps
+    end
+    add_index :fork_users, :project_id
+    add_index :fork_users, :user_id
+
+    projects = Project.where.not(forked_from_project_id: [nil, ""])
+    projects.each do |p|
+      ForkUser.create(project_id: p.forked_from_project_id, fork_project_id: p.id, user_id: p.user_id)
+    end
+  end
+end
diff --git a/spec/models/fork_user_spec.rb b/spec/models/fork_user_spec.rb
new file mode 100644
index 000000000..e151b5c00
--- /dev/null
+++ b/spec/models/fork_user_spec.rb
@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe ForkUser, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end