The present invention relates to the field of automated equipment, and more particularly to a film mounting machine. The machine is used for mounting a dry film on a printed board, and comprises a machine frame, a transmitting device installed on the machine frame to transmit a printed board, a film mounting module in sliding connection with the machine frame and to have the dry film attached on the surface of the printed board and a control device for controlling the electric components of the transmitting device and the film mounting module to work. In the invention, the film mounting machine can drive the film pressing roll of a film pressing driving device to move in the direction of a printed board so as to press tightly the printed board with a pre-attached dry film. This replaces the traditional method in which a flexible printed board is transmitted under the film pressing roll, and ensures that when the film pressing roll presses tightly a printed board, the problem of film overlapping and bending caused by the breakage of the printed board during transmission can be avoided. The machine can be especially suitable for mounting film on flexible printed boards, and raises the qualification rate of film mounting on the flexible printed boards. In addition, the film mounting process is completely automatic, which saves manpower and cost and increases production efficiency.