The main control points of wheel crane hoisting winding open hydraulic system and conventional closed hydraulic system control theory were discussed, and a new type of control technology was put forward for controlling wheel crane hoisting winding closed hydraulic system.The principle was that a balance valve was set in hydraulic system to solve startstop sneak problems such as hook, impact vibration and etc, by using the balancing valve features.The balancing valve load safety features were used to avoid hydraulic system driving lines in case of burst or engine failure in the event of stall load fall.By balancing valve pilot inside and outside spreading, the problem of balancing valve fever in the closed hydraulic system was solved. Use proves that the designed QLY series wheel crane hoisting winch closed hydraulic system control technology is stable and reliable in performance.