This deep treatment water purifier provides a perfect solution to the problems of excessive residual chlorine, heavy metal residues, and rough water quality in municipal tap water. The equipment adopts a dedicated tap water purification process, which first performs comprehensive and deep filtration to accurately remove various pollutants such as residual chlorine, heavy metals, suspended impurities, and odors in the water, solving the hidden dangers of tap water from the source and making the water quality meet direct drinking standards. Different from ordinary filtration equipment, this machine adds a natural mineralization water nourishing module, which continuously releases beneficial minerals such as strontium, zinc, selenium, calcium, magnesium, etc., optimizing water quality and taste, balancing drinking water nutrition. Long term use can effectively improve the quality of household drinking water, making every drop of tap water become healthy and good water.