The invention provides a method for censoring stream media live programs. The method comprises the following steps that: (1) a client sends a live program request to a stream media server and establishes a connection with the stream media server; (2) a program thread in the stream media server receives the stream media program data; (3) the program thread correspondingly sends the same stream media program data to a program censor system and a buffer zone set in the stream media server respectively; (4) if the program censor system does not find prohibited code streams, the stream media program data in the buffer zone are sent to the client thread after the buffer zone is filled up, and the step (6) is jumped to; (5) if the program censor system finds prohibited code streams, the program censor system sends a command to a program control module of the stream media server to replace the prohibited code streams with the prefabricated local program data, and sends the prefabricated local program data to the buffer zone and then to the client thread; and (6) the client thread sends the program data obtained at the step (4) or (5) to the client.