The invention discloses a cleaning device for a solar cell panel. The device comprises a solar panel, a water pipe is fixedly arranged at the top of the solar panel, and a motor cover is fixedly arranged at one end of the bottom of the solar panel; a motor is fixedly arranged in an inner cavity of the motor cover, a single-surface gear is fixedly connected to one end of the motor, and a gear diskis movably arranged at one side of the single-surface gear; strip-shaped teeth are fixedly connected to one end of the gear disk. According to the cleaning device for the solar cell panel, water in the water pipe is sprayed to the solar panel through spray nozzles, dust on the surface of the solar panel is flushed accordingly, the surface of the solar panel is kept clean, and accordingly the powergeneration efficiency of the solar panel is improved; a transmission shaft drives a windscreen wiper to move on the surface of the solar panel, stubborn dirty substances on the surface of the solar panel can be removed, the surface of the solar panel is flushed through the spray nozzles, the efficiency and quality of cleaning the solar panel are further improved, the labor intensity of a user canbe effectively lowered, and the device is suitable for wide popularization and application.