diff --git a/app/helpers/repositories_helper.rb b/app/helpers/repositories_helper.rb
index c98174777..afde12d2c 100644
--- a/app/helpers/repositories_helper.rb
+++ b/app/helpers/repositories_helper.rb
@@ -104,39 +104,71 @@ module RepositoriesHelper
   end
 
    # author hui.he
-  def new_readme_render_decode64_content(str, owner, repo, ref, readme_path, readme_name)
+   def new_readme_render_decode64_content(str, owner, repo, ref, readme_path, readme_name)
     file_path = readme_path.include?('/') ? readme_path.gsub("/#{readme_name}", '') : readme_path.gsub("#{readme_name}", '')
     return nil if str.blank?
     content = Base64.decode64(str).force_encoding('UTF-8')
-    s_regex = /\[.*?\]\((.*?)\)/
+    # s_regex = /\s\!\[.*?\]\((.*?)\)\s/
+    s_regex_c = /`{1,2}[^`](.*?)`{1,2}/
+    s_regex = /```([\s\S]*?)```[\s]?/
+    s_regex_1 = /\[.*?\]\((.*?)\)/
     src_regex = /src=\"(.*?)\"/
+    src_regex_1 = /src=\'(.*?)\'/
+    ss_c = content.to_s.scan(s_regex_c)
     ss = content.to_s.scan(s_regex)
+    ss_1 = content.to_s.scan(s_regex_1)
     ss_src = content.to_s.scan(src_regex)
-    total_sources = ss + ss_src
-    total_sources.uniq! 
-    total_sources.each do |s|
-      begin
-        s_content = s[0]
-        # 链接直接跳过不做替换
-        next if s_content.starts_with?('http://') || s_content.starts_with?('https://') || s_content.starts_with?('mailto:') || s_content.blank?
-        ext = File.extname(s_content)[1..-1]
-        if (image_type?(ext) || download_type(ext)) && !ext.blank?
-          s_content = File.expand_path(s_content, file_path)
-          s_content = s_content.split("#{Rails.root}/")[1]
-          # content = content.gsub(s[0], "/#{s_content}")
-          s_content = [base_url, "/api/#{owner&.login}/#{repo.identifier}/raw?filepath=#{s_content}&ref=#{ref}"].join
-          content = content.gsub(s[0], s_content)
-        else
-          path = [owner&.login, repo&.identifier, 'tree', ref, file_path].join("/")
-          s_content = File.expand_path(s_content, path)
-          s_content = s_content.split("#{Rails.root}/")[1]
-          content = content.gsub('('+s[0]+')', '('+"/#{s_content}"+')')
+    ss_src_1 = content.to_s.scan(src_regex_1)
+    total_sources = {ss_c: ss_c,ss: ss, ss_1: ss_1, ss_src: ss_src, ss_src_1: ss_src_1} 
+    # total_sources.uniq! 
+    total_sources.except(:ss, :ss_c).each do |k, sources|
+      sources.each do |s| 
+        begin
+          s_content = s[0]
+          # 链接直接跳过不做替换
+          next if s_content.starts_with?('http://') || s_content.starts_with?('https://') || s_content.starts_with?('mailto:') || s_content.blank?
+          ext = File.extname(s_content)[1..-1]
+          if (image_type?(ext) || download_type(ext)) && !ext.blank?
+            s_content = File.expand_path(s_content, file_path)
+            s_content = s_content.split("#{Rails.root}/")[1]
+            # content = content.gsub(s[0], "/#{s_content}")
+            s_content = [base_url, "/api/#{owner&.login}/#{repo.identifier}/raw?filepath=#{s_content}&ref=#{ref}"].join
+            case k.to_s 
+            when 'ss_src'
+              content = content.gsub("src=\"#{s[0]}\"", "src=\"#{s_content}\"")
+            when 'ss_src_1'
+              content = content.gsub("src=\'#{s[0]}\'", "src=\'#{s_content}\'")
+            else 
+              content = content.gsub("(#{s[0]})", "(#{s_content})")
+            end
+          else
+            path = [owner&.login, repo&.identifier, 'tree', ref, file_path].join("/")
+            s_content = File.expand_path(s_content, path)
+            s_content = s_content.split("#{Rails.root}/")[1]
+            case k.to_s
+            when 'ss_src'
+              content = content.gsub("src=\"#{s[0]}\"", "src=\"/#{s_content}\"")
+            when 'ss_src_1'
+              content = content.gsub("src=\'#{s[0]}\'", "src=\'/#{s_content}\'")
+            else 
+              content = content.gsub("(#{s[0]})", "(/#{s_content})")
+            end
+          end
+        rescue
+          next
         end
-      rescue
-        next
       end
     end
 
+    after_ss_souces = content.to_s.scan(s_regex)
+    after_ss_souces.each_with_index do |s, index| 
+      content = content.gsub("#{s[0]}","#{total_sources[:ss][index][0]}")
+    end
+    after_ss_c_souces = content.to_s.scan(s_regex_c)
+    after_ss_c_souces.each_with_index do |s, index| 
+      content = content.gsub("#{s[0]}","#{total_sources[:ss_c][index][0]}")
+    end
+    
     return content
   rescue
     return str
diff --git a/app/views/api/v1/issues/_detail.json.jbuilder b/app/views/api/v1/issues/_detail.json.jbuilder
index 712e7a960..7c3adecc3 100644
--- a/app/views/api/v1/issues/_detail.json.jbuilder
+++ b/app/views/api/v1/issues/_detail.json.jbuilder
@@ -1,5 +1,5 @@
 json.(issue, :id, :subject, :project_issues_index, :description, :branch_name, :start_date, :due_date)
-json.blockchain_token_num issue.project&.use_blockchain ? issue.blockchain_token_num : nil
+json.blockchain_token_num (Site.has_blockchain? && issue.project&.use_blockchain) ? issue.blockchain_token_num : nil
 json.created_at issue.created_on.strftime("%Y-%m-%d %H:%M")
 json.updated_at issue.updated_on.strftime("%Y-%m-%d %H:%M")
 json.tags issue.show_issue_tags.each do |tag|
diff --git a/app/views/api/v1/issues/_simple_detail.json.jbuilder b/app/views/api/v1/issues/_simple_detail.json.jbuilder
index 4f288ce20..8b4bb6af3 100644
--- a/app/views/api/v1/issues/_simple_detail.json.jbuilder
+++ b/app/views/api/v1/issues/_simple_detail.json.jbuilder
@@ -1,5 +1,5 @@
 json.(issue, :id, :subject, :project_issues_index)
-json.blockchain_token_num issue.project&.use_blockchain ? issue.blockchain_token_num : nil
+json.blockchain_token_num (Site.has_blockchain? && issue.project&.use_blockchain) ? issue.blockchain_token_num : nil
 json.created_at issue.created_on.strftime("%Y-%m-%d %H:%M")
 json.updated_at issue.updated_on.strftime("%Y-%m-%d %H:%M")
 json.tags issue.show_issue_tags.each do |tag|
diff --git a/app/views/repositories/_simple_entry.json.jbuilder b/app/views/repositories/_simple_entry.json.jbuilder
index 339214cc4..42342f07b 100644
--- a/app/views/repositories/_simple_entry.json.jbuilder
+++ b/app/views/repositories/_simple_entry.json.jbuilder
@@ -2,7 +2,7 @@ if @project.forge?
   is_dir = @sub_entries.is_a?(Array)
   file_name = entry['name']
   file_type = file_name.starts_with?('.') ? file_name[1..-1] : File.extname(file_name.to_s)[1..-1]
-  direct_download = ["makefile","dockerfile"].exclude?(file_name.to_s.downcase) && download_type(file_type)
+  direct_download = %w(makefile dockerfile readme).exclude?(file_name.to_s.downcase) && download_type(file_type)
   image_type = image_type?(file_type)
   json.name file_name
   json.sha entry['sha']