The invention discloses a method, a device and a system for realizing the positioning playing of streaming media. The method for the positioning playing of the streaming media comprises the steps of: sending a positioning playing request to a streaming media server; receiving and storing preview key frames which are transmitted by the streaming media server and are used for the positioning playing according to the preset range of cache capacity; displaying pictures of the preview key frames used for the positioning playing; and starting the playing of the streaming media according to the preview key frames positioningly selected by a user. The method, the device and the system for realizing the positioning playing of the streaming media can improve the positioning operation experience of the user, control the download time of extracted programs, and reduce the storage requirement on a streaming media terminal.