@hoanganh17 I'm not sure what you mean do you have a link to the game?
If you mean when you click on a sprite it has a highlighted outline around it you could make two images. One representing what it looks like before it is clicked, and another with a outline around it. Then just do an image swap kind of like this button example:http://www.scirra.com/forum/update-a-button-or-text-field_topic61410_post376958.html?KW=#376958
If it is a moving sprite you might have to pin them together, or use animation frames by setting on sprite clicked, or touched to set the outline animation.