diff --git a/app/controllers/api/v1/projects/pulls/pulls_controller.rb b/app/controllers/api/v1/projects/pulls/pulls_controller.rb
index 28f1cd327..10e1b3c02 100644
--- a/app/controllers/api/v1/projects/pulls/pulls_controller.rb
+++ b/app/controllers/api/v1/projects/pulls/pulls_controller.rb
@@ -6,13 +6,22 @@ class Api::V1::Projects::Pulls::PullsController < Api::V1::BaseController
     @pulls = kaminari_paginate(@pulls)
   end
 
-  before_action :load_pull_request, only: [:show, :files] 
+  before_action :load_pull_request, only: [:show, :reopen, :files] 
 
   def show 
    @result_object = Api::V1::Projects::Pulls::GetService.call(@project, @pull_request, current_user&.gitea_token)
    @last_review = @pull_request.reviews.order(created_at: :desc).take
   end
 
+  def reopen
+    @result_object = Api::V1::Projects::Pulls::ReopenService.call(@project, @pull_request, current_user)
+    if @result_object
+      render_ok
+    else
+      render_error("合并请求重新打开失败！")
+    end
+  end
+
   def files
     if params[:filepath].present? 
       @result_object = $gitea_hat_client.get_repos_pulls_files_by_owner_repo_index_filepath(@project&.owner.login, @project&.identifier, @pull_request.gitea_number, CGI.escape(params[:filepath]), {query: {token: current_user&.gitea_token}})
diff --git a/app/models/pull_request.rb b/app/models/pull_request.rb
index 8d276625e..b12e8491b 100644
--- a/app/models/pull_request.rb
+++ b/app/models/pull_request.rb
@@ -144,6 +144,18 @@ class PullRequest < ApplicationRecord
     "#{Rails.application.config_for(:configuration)['platform_url']}/#{self.project.owner.login}/#{self.project.name}/pulls/#{self.id}"
   end
 
+  def closed?
+    self.status == CLOSED
+  end
+
+  def merged?
+    self.status == MERGED
+  end
+
+  def opened?
+    self.status == OPEN
+  end
+
   def pr_status
     case status
     when 0 
diff --git a/app/services/api/v1/projects/pulls/reopen_service.rb b/app/services/api/v1/projects/pulls/reopen_service.rb
new file mode 100644
index 000000000..4250ac35a
--- /dev/null
+++ b/app/services/api/v1/projects/pulls/reopen_service.rb
@@ -0,0 +1,39 @@
+class Api::V1::Projects::Pulls::ReopenService < ApplicationService 
+  include ActiveModel::Model 
+
+  attr_reader :project, :pull_request, :issue, :user
+
+
+  def initialize(project, pull_request, user)
+    @project = project
+    @pull_request = pull_request
+    @issue = pull_request&.issue
+    @user = user
+  end
+
+  def call
+    raise Error, errors.full_messages.join(", ") unless valid?
+    if gitea_change_status
+      @pull_request.update_column(:status, PullRequest::OPEN)
+      @pull_request&.project_trends&.where(action_type: ProjectTrend::CLOSE).destroy_all
+      @issue.update_column(:status_id, IssueStatus::ADD)
+
+      return true
+    else
+      raise Error, 'gitea change status failed'
+    end
+  end
+
+  private
+  def valid?
+    return false if @project.blank? || @pull_request.blank? || @issue.blank? || @user.blank?
+    return false unless @pull_request.closed?
+    return true
+  end
+
+  def gitea_change_status
+    gitea_result = Gitea::PullRequest::ChangeStatusService.call(@project.owner.login, @project.identifier, @pull_request.gitea_number, false, @user&.gitea_token) 
+    return true if gitea_result[:status] == :success
+    return false
+  end
+end
\ No newline at end of file
diff --git a/app/services/gitea/pull_request/change_status_service.rb b/app/services/gitea/pull_request/change_status_service.rb
new file mode 100644
index 000000000..bc6b9df7c
--- /dev/null
+++ b/app/services/gitea/pull_request/change_status_service.rb
@@ -0,0 +1,38 @@
+# Get a pull request
+class Gitea::PullRequest::ChangeStatusService < Gitea::ClientService
+  attr_reader :owner, :repo, :number, :is_closed, :token
+
+  #eq:
+  # Gitea::PullRequest::ChangeStatusService.call(user.login, repository.identifier, pull.gitea_number, true, user.gitea_token)
+  def initialize(owner, repo, number, is_closed, token=nil)
+    @owner  = owner
+    @repo   = repo
+    @number = number
+    @is_closed = is_closed
+    @token  = token
+  end
+
+  def call
+    response = get(url, request_params, true)
+    status, message, body = render_response(response)
+    json_format(status, message, body)
+  end
+
+  private
+
+  def request_params
+    Hash.new.merge(token: token, is_closed: is_closed)
+  end
+
+  def url
+    "/repos/#{owner}/#{repo}/pulls/#{number}/change_status".freeze
+  end
+
+  def json_format(status, message, body)
+    case status
+    when 204 then success(body)
+    else
+      error(message, status)
+    end
+  end
+end
diff --git a/app/views/pull_requests/show.json.jbuilder b/app/views/pull_requests/show.json.jbuilder
index 304457f82..d2c928b75 100644
--- a/app/views/pull_requests/show.json.jbuilder
+++ b/app/views/pull_requests/show.json.jbuilder
@@ -7,6 +7,7 @@ json.commits_count @gitea_pull["commit_num"]
 json.files_count @gitea_pull["changed_files"]
 json.comments_count @issue.journals.parent_journals.size
 json.comments_total_count @issue.get_journals_size
+json.can_reopen @pull_request.closed?
 json.assign_user do 
   json.partial! 'users/user_simple', user: @issue_assign_to
 end
diff --git a/config/routes/api.rb b/config/routes/api.rb
index f36d4b949..3d8c8b536 100644
--- a/config/routes/api.rb
+++ b/config/routes/api.rb
@@ -203,6 +203,7 @@ defaults format: :json do
             resources :pulls, module: 'pulls' do
               member do 
                 get :files
+                post :reopen
               end
               resources :versions, only: [:index] do 
                 member do