Method and system for controlling excessive consumption of mobile phone traffic

The invention discloses a method and a system for controlling excessive consumption of mobile phone traffic. An operation option is provided in a mobile phone to classify applications of the mobile phone, when one specific applications are used, the mobile phone will automatically switch the connecting manner into 3G traffic even if the 4G network signal strength is strong; the operation option provides recommended classification options, when unnecessary applications with large traffic consumption are used, the mobile phone will automatically switch into a 3G network connecting manner; and a user can also self define the application classification according to his own habits and expects. By adopting the method and system disclosed by the invention, the waiting time of the user is prolonged when unnecessarily using the applications, no excessive traffic will be wasted by watching online videos and browsing pictures on the internet at leisure times, and the problem of excessive traffic caused by over fast traffic consumption is fundamentally solved. Meanwhile, the method and system disclosed by the invention are combined with the function of reminding remaining data plan and automatically switching to the 3G network to help the user to open the last line of defense, so as to avoid the use of excessive traffic to cause additional consumption.