The operation of supplying and shutting off water, as well as the operation of mixing cold water and hot water in an appropriate ratio, is performed with feet. It is very convenient because you can use it freely, and at the same time, you can use your hands to finish dishes such as washing dishes, and operate it with your feet immediately Therefore, it provides a cold and hot water supply device for a sink that can save water by cutting off the supply of water. The cold and hot water supply device of the sink of the present invention includes a cold water valve that opens and closes the flow path of the cold water pipe, and opens and closes the flow path of the hot water pipe. The hot water valve, the electronic control valve for opening and closing the flow path of the main pipe, and the cold water valve and the hot water valve are simultaneously A valve opening/closing operation mechanism for opening/closing a furnace, a driving motor for operating the valve opening/closing operation mechanism, and a mechanism of the driving motor It outputs a plurality of control signals for controlling the movement, and a foot control switch unit installed at the bottom of the sink so as to be operated with feet A control unit for controlling the driving of the driving motor and the electronic control valve according to the control signal output from the control switch unit, and It is configured to include a position sensor unit for determining the rotational position of the drive motor by control.
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