Instant small kitchen water heater

The utility model relates to the technical field of household water heaters, and discloses an instant small kitchen water heater which comprises a shell, a quick heater is arranged in the shell, a front panel is arranged on the surface of the shell, and a cold water inlet and a hot water outlet are formed in the top and the bottom of the shell respectively. A first filter, a second filter and a sterilizer are further arranged in the shell, and the first filter and the second filter are located on one side of the water inlet end of the rapid heater. According to the water purifier, most impurities in tap water can be removed through secondary filtration of the first filter and the second filter, large-particle impurities can be removed through the PP filter element, calcium and magnesium ions can be filtered through the RO filter element, the tap water becomes soft water, excessive impurity precipitation during heating of the heater is avoided, and meanwhile the sterilization device is arranged in a matched mo