Film tearing device

A film tearing device is used for tearing off a protective film on a product and comprises a positioning mechanism. The film tearing mechanism comprises a movable driving part and a film tearing assembly, the movable driving part is arranged on one side of the positioning mechanism, and the film tearing assembly comprises a film tearing driving part, two fixing parts and two elastic clamping parts; the film tearing driving part is connected with the driving end of the movable driving part so as to move towards the positioning mechanism under the driving of the movable driving part; the two fixing pieces are connected with the driving end of the film tearing driving piece so as to be driven by the film tearing driving piece to get close to each other. The two elastic clamping pieces are movably connected with the two fixing pieces correspondingly and used for getting close to each other under driving of the fixing pieces so as to clamp the protective film on the product, and when the ends, away from the fixing