Abstract: The solar constant temperature intelligent water supply system is designed for livestock to solve the problems of low water consumption, reduced diet, stunted growth and reduced physical performance of livestock in the cold winter climate of alpine regions. At the same time, the quality and economic efficiency of breeding has been improved.The system uses solar photovoltaic power generation to provide electricity for system operation,and solar heating to heat the water to the appropriate drinking temperature range to meet the needs of livestock drinking warm water in winter, and adopts temperature control module, infrared sensor, liquid level switch and other equipment to achieve solar heating and livestock drinking water automatic control and other functions. The results show that the system runs stably, the heat collection effect is obvious, and the energy required by the system is all from solar energy, energy saving and environmental protection, and the operation cost is low. Automatic drinking water control for livestock greatly reduces herdsmen’s labor and improves breeding conditions.