Abstract: An improved structure of temperature-controlled infrared sensor water faucet, which is comprised by cool water supply pipe and hot water supply pipe assembled from bottom to upward so that the mixing control ceramic valve installed in the upper valve slot can control cool and hot water as required, and the vertical water faucet can supply cool/hot water or mixed water with set temperature; wherein warm water supply pipe with downward water channel at one top to bear the adjusted warm water and side exit water outlet at one top are respectively put through the front of valve slot under the mixing control ceramic valve and cool & hot water supply hole, the adjusted warm water can flow out the outlet handle from the warm water drainage channel.