The key point of lifting circuit of cutting department of continuous miner is the setting and adjustment of cylinder balance valve and back pressure valve. The theoretical basis and operation method of pressure regulation of the two valves aimed at safety and energy saving were discussed in detail.Aimed at the defects of the existing system, the problem of quick inspection of the lifting cylinder and balance valve of the cutting department was solved by adding a cutoff valve for daily inspection. By adding a reversing valve, the system could not only meet the lifting requirement of the whole machine during maintenance, but also avoid the invalid lifting of the front fuselage during normal cutting