The invention discloses a direct-current brushless mute water pump, which comprises a water pump main body, wherein a rotor, a
stator and a
pump head are arranged inside the water pump main body, the rotor and the
stator are mutually connected with each other, the
pump head is fixed on the upper part of the water pump main body, a pump cavity is formed between the rotor and the
stator, the center of the rotor is provided with a central shaft, the central position, adjacent to the upper part of the central shaft, of the
pump head is provided with a water inlet, a water inlet passage is formed between the central shaft and the rotor, a plurality of groups of balance pores are arranged in the water inlet passage, the pump cavity can be instantaneously fully filled with the water by adopting the design of the balance pores, and the negative pressure is generated in the water inlet, so that the rotor is imbalanced, the rotor and the stator are mutually balanced, the rotor is enabled to work under the freedom state, the friction
resistance force between the rotor and a mechanical member in work can be reduced, and no
mechanical abrasion noise is realized when the water pump works; since the pump cavity is rapidly filled with the water, the air inside the water passage can be thoroughly emptied in a short time, the air
noise generated by the rotation of the air in the pump cavity can be lowered, more than 80 percent of
noise pollution can be reduced, and the direct-current brushless mute water pump has broad market prospect.