The invention discloses a water inlet valve assembly capable of changing the output signal frequency. The water inlet valve assembly comprises a water inlet valve body, wherein one end of the water inlet valve body is connected with a water inlet connector, the other end of the water inlet valve body is provided with a turbine type water flow sensor; a water pump connector is arranged on the sideface of the water inlet valve body, and a water inlet valve module is installed on the water inlet valve body; an adjusting ring is arranged between the water inlet connector and the water inlet valvebody, the adjusting ring is arranged in a flow channel of the water inlet valve body; and an eccentric water passing hole is formed in the adjusting ring, a positioning rod is arranged outside the adjusting ring, and a plurality of gears corresponding to the positioning rods are arranged in the flow channel of the water inlet valve body. According to the water inlet valve assembly capable of changing the output signal frequency, the adjusting ring is correspondingly arranged in different gears to enable the turbine type water flow sensors to output different linear frequency signals, so thatthe maximum application range is realized, the water flow sensor with different parameters can be adjusted and interchanged, the problems of replacement and after-sales are reduced, and the cost is saved.