The utility model relates to a film pressing device is applicable to the building engineering that hydraulic engineering dam, reservoir, channel, pond etc. Have prevention of seepage functional requirement, can guarantee the designing requirement of aspects such as the geomembrane bonded among the seepage prevention system compactness, planarization. This device is equipped with motor follower, driving shaft gear and press mold wheel including motor, driving shaft, driven shaft and press mold wheel above the driving shaft, be equipped with driven shaft gear and press mold wheel above the driven shaft, the motor gear engagement of motor follower and motor, driving shaft gear and driven shaft gear engagement are installed at the protective housing motor, motor follower, driving shaft gear and driven shaft gear internal, reveal and install the press mold wheel above the driving shaft of the external face of protective housing and driven shaft. The phenomenon that adopts the local sealing off of hot welding machine existence and burn the hole has been solved, also having solved simultaneously sweat soldering or binder and having appeared the fold easily at the faying face, the material that leads to the fact is extravagant, the surface course mortar is not full leads to the fact empty phenomenon.