The invention discloses an intelligent rate-changing playing method with four flows integrated into one flow. According to the intelligent rate-changing playing method with four flows integrated into one flow, four different transmission flows which are a real-time video flow output by video equipment at the front end of a transformer substation in a power grid system, a video recording document flow on video storage equipment at the front end of the transformer substation, a control flow used for controlling remote control equipment at the front end of the transformer substation, and a user-defined proprietary protocol flow are integrated into an integral flow to be transmitted through one communication channel, and the transmission rate can be adjusted in real time by an intelligent rate-changing module according to a current network situation in the transmission process of the integral flow. According to the intelligent rate-changing playing method with four flows integrated into one flow, the streaming media technology is adopted, the real-time video flow of the video equipment at the front end of the transformer substation is collected by the single channel and then is distributed to a requiring client side to be played, the transmission performance is greatly improved, the transmission rate can be adjusted in real time according to the current network situation, therefore, the phenomenon of network congestion caused by a large number of video requests is effectively avoided, a good network environment is provided for the interior of the power grid system, and daily work efficiency is improved.