diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index 4724224e8..0ece8f227 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -293,7 +293,10 @@ class ProjectsController < ApplicationController
   end
 
   def praise_users
+    start_at = params[:start_at]
+    end_at = params[:end_at]
     praises = @project.praise_treads.includes(:user).order("praise_treads.created_at desc").distinct
+    praises = praises.where("praise_treads.created_at > ? and praise_treads.created_at < ?", Time.at(start_at), Time.at(end_at)) if start_at.present? && end_at.present?
     @praises_count = praises.size
     @praises = paginate(praises)
   end
diff --git a/app/controllers/watchers_controller.rb b/app/controllers/watchers_controller.rb
index aa3642616..81ba7ceda 100644
--- a/app/controllers/watchers_controller.rb
+++ b/app/controllers/watchers_controller.rb
@@ -5,7 +5,10 @@ class WatchersController < ApplicationController
   before_action :get_target
 
   def index
+    start_at = params[:start_at]
+    end_at = params[:end_at]
     scope = @target.watchers.includes(:user)
+    scope = scope.where("watchers.created_at > ? and watchers.created_at < ?", Time.at(start_at), Time.at(end_at)) if start_at.present? && end_at.present?
     @watchers = paginate(scope)
   end