The faucet control device and method, and faucet are disclosed The faucet control device has a first and a second flow sensors measuring quantity of hot and cold water respectively, a first and a second temperature sensors measuring temperature of hot and cold water respectively, a heating tank heating hot water supplied from a hot water pile with a heater installed therein and storing heated water, a third temperature sensor measuring temperature of the heated water, a hot water direct supplying pipe outputting the hot water supplied from a hot water pipe, a electronic valve outputting mixed water by selectively mixing the heated water, the hot water and the cold water, and a controller controlling operation of the heater based on the temperature of the heated water and controlling opening amount of the electronic valve to make quantity and temperature of discharged water equal to target quantity and temperature.