The invention provides a set-top box (STB) program recommending method and system for a smart television (TV) terminal. The method comprises the steps of capturing a sound file of a digital TV program which is currently watched by users through an STB, and uploading the sound file; identifying a channel which is currently watched by the users according to the uploaded sound file, and transmitting the channel back to the smart TV terminal; acquiring the name of the program, which is currently watched by the users, of the corresponding channel by the smart TV terminal according to the identified channel; searching resource information strongly related to the name of the program in a manner of taking the name of the program as a keyword, and recommending the resource information to the users for choice through the smart TV terminal. The system comprises a sound file capture module, a channel identification module, a digital TV EPG (Electronic Program Guide) module, a program identification module and a program recommending module. The method and the system have the outstanding advantages that program information which has relatively strong pertinence and further meets the needs of the users is recommended to the users through the smart TV under the condition of not modifying the existing STB software, and meanwhile, the commercial value is very high in view of that a new profit model can be realized by the method and the system.