Method of adding service ad to display picture on intelligent mobile phone

The invention discloses a method of adding a service ad to a display picture on an intelligent mobile phone. The method comprises steps: an ad content database with multiple functional modules are built in a server, wherein the ad contents are provided by an advertiser; when a user makes or receives a call, the server issues a command to the mobile phone of the user, and an ad picture is displayed on a mobile phone screen; after the call is over or the ad picture is closed, a merchant LOGO is displayed on the mobile phone screen and is kept for 10s and then exits; when the user clicks the merchant LOGO within the 10s when the merchant LOGO is displayed, a full-screen ad picture of the merchant is displayed, and multiple keys corresponding to the multiple functional modules in the first step also exist in the ad picture; and when the user clicks one key in the multiple keys, the ad content corresponding to the key is displayed. Thus, when the user sees the needed picture ad, service of the advertiser can be obtained instantly, convenience is brought to the user, and advertising benefits are greatly improved.