The invention discloses a solar maximum power point following control detection system which comprises two photoresistors and two sensors. One of the two photoresistors is sleeved with a thin light-proof tube, and the other of the two photoresistors is arranged open; the two sensors are arranged on a motor driving flat plate in parallel; the open type photoresistor is used for measuring an environmental basic value, a platform is driven by a motor to form an angle with incident sunlight due to the existence of the thin light-proof tube, so that the two sensors generate large signal difference;a comparison threshold value of the photoresistor sleeved with the tube is set through the environmental light intensity measured by the open type photoresistor. The system can solve the defects of an existing scheme, is relatively simple and lower in manufacturing cost, and solves the problem of tracking the maximum power point of solar energy through skillful management in sensor arrangement.