Model airplane crossing machine

The utility model relates to the technical field of unmanned aerial vehicles, and discloses a model airplane crossing machine which comprises a machine body, a protection frame provided with four duct holes and a motor carrying frame detachably connected to the upper portion of the protection frame, and the motor carrying frame is provided with connecting arm parts which extend in a one-to-one mode and are suspended at one ends of the duct holes. One rotor wing motor is fixed at each connecting arm part; the other rotor wing motor is fixed at the other connecting arm part; the bottom plate is detachably fixed to the lower portion of the protection frame, and a cavity is formed between the bottom plate and the protection frame in a matched mode; the camera and the antenna are arranged on the bottom plate, at least part of the camera and the antenna are contained in the cavity, and a first receding hole for receding the camera and a second receding hole for receding the antenna are formed in the protection fram