The invention discloses a dynamic cartoon playing system based on a smart terminal, comprising a screen storage box and a database, a server, a control end and a player, which are connected in sequence, wherein the front surface and the rear surface of the screen storage box are both fixedly connected with a cleaning bracket by screws; one side of the cleaning bracket is fixedly connected with a wheel rod bracket by welding; the inner side of the wheel rod bracket is provided with a winding wheel; an adjusting wheel rod is arranged through the inside of the winding wheel, and the adjusting wheel rod and the wheel rod bracket are rotatably connected through a bearing; and the inner side of the cleaning bracket is engaged and fixedly connected with cleaning foam through a groove. The cleaning brackets arranged on the front surface and the rear surface of the screen storage box and the cleaning foam on the inner side of the cleaning brackets are designed so as to clean the projection screen, which solves the problem that after long-term use of the existing smart terminal-based dynamic cartoon playing system, the surface thereof is prone to contaminate more dust and is not easy to clean.