The present invention discloses a method for remotely pushing a program source to a set top box through WeChat based on a heartbeat module, comprising the steps as follows: a heartbeat service module is arranged between a service server and a set top box; the heartbeat service module establishes or updates data information of an in-memory database according to a heartbeat message transmitted by the set top box; a user obtains data information of the object set top box in the in-memory database through WeChat, then a program source pushing command is transmitted to the heartbeat service module through the service server according to the data information, and the heartbeat service module stores the program source pushing command; the program source pushing command is added to a heartbeat response message of the heartbeat service module, wherein the heartbeat response message is used for achieving heartbeat response to the next heartbeat message of the object set top box; and the object set top box executes the program source pushing command, and adds a command execution state to the next heartbeat message, in this way, the program source is remotely pushed to the set top box through WeChat. The method of the present invention has the advantages of simple structure, easy realization, small network bandwidth occupation, small influence on performance of the set top box and the heartbeat service module, stable performance and low cost.