Disclosed is a soilless cultivation irrigation circulating control system. The soilless cultivation irrigation circulating control system comprises a mother liquor supply device, an acid liquor supply device, a clear water storage tank device, a return water recovery device, a fertilizer mixing device, a nutrient solution storage tank device, an irrigation control device and a control cabinet. According to the connection relation of the devices, the mother liquor supply device, the fertilizer mixing device, the nutrient solution storage tank device and the irrigation control device are connected in sequence; the fertilizer mixing device is connected with the acid liquor supply device, the clear water storage tank device and the return water recovery device; the nutrient solution storage tank device is connected with the acid liquor supply device; the control cabinet is in wired or wireless connection with the mother liquor supply device, the acid liquor supply device, the clear water storage tank device, the return water recovery device, the fertilizer mixing device, the nutrient solution storage tank device and the irrigation control device. According to the soilless cultivation irrigation circulating control system, the labor cost is saved, the utilization of fertilizer is greatly improved, the purposes of high efficiency and high yield are achieved, and return water seeping after drip irrigation is conducted can be collected, and can be recycled after filtration and disinfection are conducted.