Anti-theft device of coin receiver

The invention relates to an anti-theft device of a coin receiver, which includes a body and an electromagnetic valve module, wherein, a slipping groove is provided at the bottom of the rear side of the channel for coin displacement, and the front side of the slipping groove is provided with a refund channel for the coin refunding, and an electromagnetic valve of the electromagnetic valve module and a gate capable of driving the electromagnetic valve to perform movable expansion are respectively provided on both sides of the slipping groove, the gate is provided with a through groove on the base, and the lateral wall of the refund channel adjacent to the through groove is extended upwards with an anti-theft plate so that the coins can pass through the through groove for admission, while when users make use of a flexible film or other tools to penetrate through the refund channel. Because the anti-theft plate is separated or blocked at the backside of the refund channel, so that the flexible film can indeed blo