The present invention discloses a pressure control valve of an electric sprayer, which includes a spray body where compressed liquid is contained; a spray adjusting part which is installed at one end of a hose connected to the spray body and including a nozzle for spraying the compressed liquid and a valve for controlling the spraying of the liquid with the nozzle; a microswitch which electrically connects the spray adjusting part to a motor for supplying power to the spray adjusting part and generates a stop signal of the motor when the valve is closed; and a driving member which is installed in the spraying body and drives the microswitch when the valve is closed. When the valve is closed, the inner pressure of the driving member increases to touch the microswitch and stop the motor. It is possible to stop the spraying of the liquid more stably.
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