A valve for intelligent control over a liquefied petroleum gas steel cylinder comprises a valve body; a gas channel is arranged in the valve body; an air inlet in the upper end of the gas channel is formed in the side face of the valve body and matched with a pressure relief valve of the steel cylinder; a gas control valve is arranged on the upstream portion of the gas channel of the valve body; the valve body is provided with an electronic identity recognition controller; the signal input end of the electronic identity recognition controller is in wireless connection with an intelligent charging gun which is used for recognizing the register information of the steel cylinder; an anti-charging device is installed in the portion, on the downstream portion of the gas control valve, of the gas channel; the valve body is provided with an anti-charging device action mechanism, and the action control end of the anti-charging device action mechanism is in signal connection with the output endof the electronic identity recognition controller; and an action part of the anti-charging device action mechanism is matched with a blocking part of the anti-charging device, and the blocking part of the anti-charging device is arranged on the movement track of the anti-charging device action mechanism. The valve for intelligent control over the liquefied petroleum gas steel cylinder has the beneficial effects that user information register management of the steel cylinder is achieved, the gas consumption condition of the liquefied petroleum gas steel cylinder is checked in real time, and annual gas volume data are provided for gas station operators.