First, the use of the solenoid valve box, centralized installation of the solenoid valve, can reduce the power supply and control line of each solenoid valve, the centralized control system electrical control circuit connected to the solenoid valve box, the solenoid valve box only needs to lay the gas pipe to the pneumatic equipment, especially suitable for the start of the control system under harsh working conditions. Second, the use of the solenoid valve box with bus communication function, only one communication line between the master station and the slave station can complete all communication control functions, reduce a large number of cables and wiring work, save cable and labor costs, and the system expansion is only to expand the slave station, the main control system does not need to add IO equipment, convenient operation and construction. Third, if the solenoid valve needs manual, automatic, chain and other control methods, it must use the solenoid valve box, with the corresponding control circuit to complete. Fourth, the traditional way to install a solenoid valve on the equipment, then the power supply and control line also need to be connected to the equipment, if the environment is more severe places with explosion-proof requirements, the requirements of the solenoid valve will be very high (such as explosion-proof), then this way there are great obstacles, and increase the cost of the solenoid valve, the price of the explosion-proof solenoid valve is at least 2-3 times compared with ordinary solenoid valves, The general solenoid valve can be used with the solenoid valve box, which can protect the solenoid valve, extend the use time of the solenoid valve and equipment, and reduce losses and save costs. Five, the solenoid valve box is a centralized control system, saving time during equipment inspection, convenient maintenance, improve work efficiency, the traditional inspection method of workload is relatively large, the installation of the solenoid valve is relatively scattered, the maintenance takes more time, the time can be shortened by 3-4 times. Six, the use of solenoid valve box, for subsequent maintenance work, transformation and upgrading is more convenient.