Waterproof device for door lock of distribution box

The utility model relates to a waterproof device for a door lock of a distribution box, which effectively solves the problems that threads are easy to corrode and the operation is tedious and laborious. According to the technical scheme, the device comprises a U-shaped plate with a downward opening, a baffle capable of moving up and down is installed on the inner side of the U-shaped plate, after the baffle moves upwards, the left end face and the right end face of the baffle and the upper end face of the baffle can be arranged in the corresponding sides of the U-shaped plate, and the baffle can be fixed at the moment; after the baffle moves downwards, the inner side of the U-shaped plate and the upper end of the baffle form a rectangular cavity, and the baffle is not separated from the U-shaped plate after moving downwards; a flat plate is arranged on the front end surface of the U-shaped plate; through cooperation of the baffle and the U-shaped plate, rainwater can be prevented from flowing into the key hol