The invention discloses a remote monitoring system for dairy cattle raising, and the system comprises an onsite control device disposed in a dairy farm, and a monitoring host disposed at a remote monitoring center. The onsite control device comprises a controller, a display screen, an alarm circuit, a first wireless receiving and transmitting module, a second wireless receiving and transmitting module, a physiological parameter obtaining unit, an environmental parameter obtaining unit, a camera, a sterilization device, a ventilation device, a drug putting device, a forage putting device, a first drive circuit, a second drive circuit, a third drive circuit, and a fourth drive circuit. The system can achieve the dynamic, real-time, low-cost and intelligent monitoring of the environment information, image and video information and the physical health information of dairy cattle of the dairy farm, is stable and reliable in information transmission, improves the automatic control efficiency of dairy cattle raising, facilitates the large-scale production and the popularization and application of cultivation.