PURPOSE: An aquarium Automatic cleaning robot using the visible spectrophotometer is provided to automatically clean and recognize the wall when the waste products of fishes or moss attach to the wall of the aquarium and is needed to be cleaned.CONSTITUTION: An aquarium Automatic cleaning robot using the visible spectrophotometer comprises a motor (2-1) that attaches two rollers (2-5) to the wall of the aquarium and operates them, a sensor for sensing foreign substance (2-4), and a motor controller (2-2) which automatically operates the sensor for cleaning the aquarium. The motor controller automatically operates the motor when a foreign substance of the wall is sensed by the sensor of sensing foreign substance. The aquarium Automatic cleaning robot has an inhalation tube (2-3) which automatically inhales the foreign substance of the aquarium wall and a purification tube A (2-6) which ejects water with the inhaled foreign substance when the roller rotates due to the motor.COPYRIGHT KIPO 2013본 발명은 수족관의 벽면에 이끼나 어류의 배설물과 먹이 찌꺼기가 달라붙어 청소가 필요한 상황에서 자동으로 벽면의 상태를 인식하여 자동으로 청소할 수 있도록 안출된 수족관용 청소로봇이다.