The invention discloses an automatic drilling fluid-solid phase control system. The automatic drilling fluid-solid phase control system comprises an elevated pipe, a solid control tank, a plurality ofsolid control devices, a plurality of valves, a control host, a control module, a displayer, a camera and an alarm, wherein the plurality of solid control devices comprise a vibrating screen, a degasser, a desander, a desilter, a centrifugal machine, a stirrer, a sand pump, a weighting pump and a shearing pump. The control host can be in control connection with all the devices in the system through the control module, the operating states of all the devices in the system can be monitored in real time, centralized control over all the devices and the valves can be achieved, online monitoring is conducted according to collected data, and abnormity alarming can be conducted. The automatic drilling fluid-solid phase control system has the advantages that the structure is simple, design is reasonable, using is convenient, safety and durability are achieved, the device cost is reduced, the labor intensity of manpower is relieved, and the drilling efficiency is greatly improved.