diff --git a/app/controllers/projects/base_controller.rb b/app/controllers/projects/base_controller.rb
new file mode 100644
index 000000000..d874b4759
--- /dev/null
+++ b/app/controllers/projects/base_controller.rb
@@ -0,0 +1,5 @@
+class Projects::BaseController < ApplicationController
+  include PaginateHelper
+
+  before_action :require_login, :check_auth
+end
diff --git a/app/controllers/projects/project_applies_controller.rb b/app/controllers/projects/project_applies_controller.rb
new file mode 100644
index 000000000..37d9d615e
--- /dev/null
+++ b/app/controllers/projects/project_applies_controller.rb
@@ -0,0 +1,14 @@
+class Projects::ProjectAppliesController < Projects::BaseController
+  def create
+    project = Projects::ApplyJoinService.call(current_user, create_params)
+    render_ok(project_id: project.id)
+  rescue Projects::ApplyJoinService::Error => ex
+    render_error(ex.message)
+  end
+
+  private
+
+  def create_params
+    params.permit(:code, :role)
+  end
+end
\ No newline at end of file
diff --git a/app/jobs/apply_join_project_notify_job.rb b/app/jobs/apply_join_project_notify_job.rb
new file mode 100644
index 000000000..fe46bf0e0
--- /dev/null
+++ b/app/jobs/apply_join_project_notify_job.rb
@@ -0,0 +1,31 @@
+# 申请成为 管理员、开发者 加入项目 消息通知
+class ApplyJoinProjectNotifyJob < ApplicationJob
+  queue_as :notify
+
+  def perform(user_id, project_id, role)
+    user = User.find_by(id: user_id)
+    project = Project.find_by(id: project_id)
+    return if user.blank? || project.blank?
+
+    attrs = %i[user_id trigger_user_id container_id container_type status
+              belong_container_id belong_container_type tiding_type extra created_at updated_at]
+
+    same_attrs = {
+      trigger_user_id: user.id, status: 0, tiding_type: 'Apply', extra: role,
+      container_id: project.id, container_type: 'JoinProject',
+      belong_container_id: project.id, belong_container_type: 'Project'
+    }
+
+    # 报告人员加入时消息为系统通知消息
+    if role == 5
+      same_attrs[:container_type] = 'ReporterJoinProject'
+      same_attrs[:tiding_type]    = 'System'
+    end
+
+    Tiding.bulk_insert(*attrs) do |worker|
+      project.manager_members.each do |manager|
+        worker.add(same_attrs.merge(user_id: manager.user_id))
+      end
+    end
+  end
+end
diff --git a/app/models/applied_project.rb b/app/models/applied_project.rb
new file mode 100644
index 000000000..901443e81
--- /dev/null
+++ b/app/models/applied_project.rb
@@ -0,0 +1,9 @@
+class AppliedProject < ApplicationRecord
+  belongs_to :user
+  belongs_to :project
+
+  has_many :applied_messages, as: :applied, dependent: :destroy
+  has_many :forge_activities, as: :forge_act, dependent: :destroy
+
+  scope :pending, -> { where(status: 0) }
+end
diff --git a/app/models/forge_activity.rb b/app/models/forge_activity.rb
new file mode 100644
index 000000000..77103d0ff
--- /dev/null
+++ b/app/models/forge_activity.rb
@@ -0,0 +1,5 @@
+class ForgeActivity < ApplicationRecord
+  belongs_to :user
+  belongs_to :project
+  belongs_to :forge_act, polymorphic: true
+end
\ No newline at end of file
diff --git a/app/models/member.rb b/app/models/member.rb
index d1feb8a37..70b7fe305 100644
--- a/app/models/member.rb
+++ b/app/models/member.rb
@@ -1,6 +1,8 @@
 class Member < ApplicationRecord
-  has_many :member_roles, dependent: :destroy
+  belongs_to :user
   belongs_to :course, optional: true
   belongs_to :project, optional: true
-  belongs_to :user
+
+  has_many :member_roles, dependent: :destroy
+  has_many :roles, through: :member_roles
 end
diff --git a/app/models/member_role.rb b/app/models/member_role.rb
index 900efc732..2461c52f1 100644
--- a/app/models/member_role.rb
+++ b/app/models/member_role.rb
@@ -1,3 +1,4 @@
 class MemberRole < ApplicationRecord
+  belongs_to :role
   belongs_to :member
 end
diff --git a/app/models/project.rb b/app/models/project.rb
index ddc6f6e5f..c3c626cb0 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -1,9 +1,12 @@
 class Project < ApplicationRecord
   belongs_to :owner, class_name: 'User', foreign_key: :user_id
+
   has_many :members
+  has_many :manager_members, -> { joins(:roles).where(roles: { name: 'Manager' }) }, class_name: 'Member'
   has_one :project_score, dependent: :destroy
 
   has_many :issues
+  has_many :user_grades, dependent: :destroy
 
   # 创建者
   def creator
diff --git a/app/models/role.rb b/app/models/role.rb
new file mode 100644
index 000000000..e60606ffa
--- /dev/null
+++ b/app/models/role.rb
@@ -0,0 +1,3 @@
+class Role < ApplicationRecord
+  has_many :member_roles, dependent: :destroy
+end
\ No newline at end of file
diff --git a/app/models/user.rb b/app/models/user.rb
index a95776be9..14d7b2697 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -128,6 +128,9 @@ class User < ApplicationRecord
   has_many :bidding_users, dependent: :destroy
   has_many :bidden_project_packages, through: :bidding_users, source: :project_package
 
+  # 项目
+  has_many :applied_projects, dependent: :destroy
+
   # Groups and active users
   scope :active, lambda { where(status: STATUS_ACTIVE) }
 
diff --git a/app/models/user_grade.rb b/app/models/user_grade.rb
new file mode 100644
index 000000000..dffbb4743
--- /dev/null
+++ b/app/models/user_grade.rb
@@ -0,0 +1,4 @@
+class UserGrade < ApplicationRecord
+  belongs_to :project
+  belongs_to :user
+end
diff --git a/app/services/projects/apply_join_service.rb b/app/services/projects/apply_join_service.rb
new file mode 100644
index 000000000..a177de930
--- /dev/null
+++ b/app/services/projects/apply_join_service.rb
@@ -0,0 +1,82 @@
+class Projects::ApplyJoinService < ApplicationService
+  Error = Class.new(StandardError)
+
+  attr_reader :user, :params
+
+  def initialize(user, params)
+    @user   = user
+    @params = params
+  end
+
+  def call
+    validate!
+
+    # 项目报告人员直接加入项目
+    if params[:role] == 'reporter'
+      Projects::JoinService.call(project, user, role: 'reporter')
+      return project
+    end
+
+    ActiveRecord::Base.transaction do
+      apply = user.applied_projects.create!(project: project, role: role_value)
+
+      apply.forge_activities.find_or_create_by!(user: user, project: project)
+
+      notify_project_manager!
+    end
+
+    # notify_project_owner
+    ApplyJoinProjectNotifyJob.perform_later(user.id, project.id, role_value)
+
+    project
+  end
+
+  private
+
+  def project
+    @_project ||= Project.find_by(invite_code: params[:code].to_s.strip)
+  end
+
+  def role_value
+    @_role ||=
+      case params[:role]
+      when 'manager'   then 3
+      when 'developer' then 4
+      when 'reporter'  then 5
+      else raise Error, '角色无效'
+      end
+  end
+
+  def notify_project_manager!
+    columns = %i[user_id applied_id applied_type status viewed applied_user_id role project_id created_at updated_at]
+    AppliedMessage.bulk_insert(*columns) do |worker|
+      base_attr = { status: false, viewed: false, applied_user_id: user.id, role: role_value, project_id: project.id }
+
+      project.manager_members.each do |manager|
+        worker.add(base_attr.merge(user_id: manager.user_id))
+      end
+    end
+  end
+
+  def notify_project_owner
+    owner = project.user
+    return if owner.phone.blank?
+
+    Educoder::Sms.send(mobile: owner.phone, send_type:'applied_project_info',
+                       user_name: owner.show_name, name: project.name)
+  rescue Exception => ex
+    Rails.logger.error("发送短信失败 => #{ex.message}")
+  end
+
+  def validate!
+    # params check
+    raise Error, '邀请码不能为空' if params[:code].blank?
+    raise Error, '角色不能为空' if params[:role].blank?
+    raise Error, '角色无效' unless %w(manager developer reporter).include?(params[:role])
+
+    # logical check
+    raise Error, '邀请码无效' if project.blank?
+    raise Error, '您已在该项目中' if project.member?(user)
+    raise Error, '您已经提交过申请' if user.applied_projects.pending.exists?(project: project)
+  end
+end
\ No newline at end of file
diff --git a/app/services/projects/join_service.rb b/app/services/projects/join_service.rb
new file mode 100644
index 000000000..b434e48cd
--- /dev/null
+++ b/app/services/projects/join_service.rb
@@ -0,0 +1,35 @@
+class Projects::JoinService < ApplicationService
+  attr_reader :project, :user, :opts
+
+  def initialize(project, user, **opts)
+    @project = project
+    @user    = user
+    @opts    = opts
+  end
+
+  def call
+    ActiveRecord::Base.transaction do
+      member = project.members.create!(user: user)
+
+      member.member_roles.create!(role_id: role_value)
+
+      project.user_grades.find_or_create_by!(user: user)
+    end
+
+    ApplyJoinProjectNotifyJob.perform_later(user, project, role_value)
+
+    project
+  end
+
+  private
+
+  def role_value
+    @_role ||=
+      case opts[:role]
+      when 'manager'   then 3
+      when 'developer' then 4
+      when 'reporter'  then 5
+      else raise ArgumentError
+      end
+  end
+end
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index 6024201a4..6623edd99 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -695,6 +695,10 @@ Rails.application.routes.draw do
     end
 
     resources :libraries, only: [:index, :show, :create, :update, :destroy]
+
+    scope module: :projects do
+      resources :applied_projects, only: [:create]
+    end
   end
 
   #git 认证回调