The invention provides a voice search method and system for an application program. The voice search method for the application program includes the steps that a first preset operation performed by a user on a mobile terminal is detected; a voice input interface of the application program is called according to the first preset operation; a search term input by the user in a voice mode through the voice input interface is acquired, and voice search is performed in the application program according to the search term. By means of the method, the number of operation paths can be reduced, the operation complexity can be lowered, and therefore the operation cost is lowered.