Abstract: Abstract: Aiming at the small cabin of mine drainage pump group mainly by manual inspection control, manual control and stop the pump low degree of automation, the equipment failure rate is high, the labor intensity is big, a series of problems such as huge input of manpower and equipment costs. Study on the design of a set of small water pump linkage group automatic control system by optimizing the drainage pipeline, the modular design of controller, sensor, control and selection of monitoring configuration software programming, make full use of PLC, network communications, sensors, modular software programming technology, design a set of small water pump linkage group automatic control system,. The research and application of the system improves the efficiency and degree of automation of mine water pump small tanks by drainage, reduce the labor intensity of workers and equipment loss, reduce the cost of human and equipment investment, and ultimately to reduce labor intensity, save cost, reduce equipment investment, reduce the pump damage rate, promote the realization of mine energy-saving emission reduction targets.