The invention provides a method for realizing network cinema fluent playing based on a cloud classroom scene. The system according to the method comprises at least one teacher side and multiple student sides. The teacher side uses a standard RTP protocol and broadcasts audio and video streams to the student sides in a multicast manner by using the multicast function of the router in a local area network so as to reduce network traffic. The teacher side is customized based on a VLC open source player and comprises a customized player interface and optimized coding and decoding parameters, and the standard H264 stream is used for coding of the teacher side. The video streams to be played are decoded on the student sides by using hardware, and audios and videos are added in the playing process to perform synchronous control playing. The problem of low fluency in playing 1080P high-definition videos of the network cinema under the cloud classroom can be solved so that fluent playing of the student sides can be realized.