The invention discloses a signal source pushing method and system. The method comprises the steps that a video opening request is received through a target port; when it is judged that to-be-opened video data is in an opened state, video data corresponding to the name of the to-be-opened video data is determined from opened video data; a terminal corresponding to the target port is determined according to a pre-stored corresponding relation between port numbers and terminals; according to the terminal corresponding to the target port and received IP addresses and video receiving port numbers which are sent by the terminals, the IP address and the video receiving port number of the terminal corresponding to the target port are determined; the IP address and the video receiving port number of the terminal corresponding to the target port are added into a sending list; and the determined video data corresponding to the name of the to-be-opened video data is sent to the terminal corresponding to the target port through the sending list. According to the signal source pushing method and system, the video data can be sent to multiple terminals only through multiple target ports, the method and system are simple and accurate, and signal sources can be pushed to multiple terminals in a unified mode.