The invention relates to the technical field of water purification, in particular to a water purification control system. An outlet water quality monitoring device and an inlet water quality monitoring device in the water purification control system are communicated with a signal emitting device; the signal emitting device is communicated with a signal receiving device; a central controller can regulate the inlet water inlet quantity through an actuator and an inlet water inlet quantity regulating device; the water inlet water quantity can be regulated according to the purified water quality;an automatic detection device automatically detects the signal emitting device, the signal receiving device and the central controller; if the automatic detection device detects the problems, warningcan be given through a warning device. In addition, the water purification control system has the advantages that the design is reasonable; the control is simple; the water purification control systemis suitable for being popularized and used.