Abstract: An automatic nasal washer includes a water storage portion, a control portion, and a nasal docking portion. The water storage portion is arranged with a water storage chamber. The control portion is fixed to the water storage portion and is arranged with: a water inlet channel communicated with the water storage chamber; a switch valve configured to control the water inlet channel to be communicated with or dis-communicated from the water storage chamber; a water return channel communicated with the water inlet channel; and a suction member configured to provide a negative pressure to the water return channel. The nasal docking portion is connected to a point where the water inlet channel is connected to the water return channel; and configured to output washing water from the water inlet channel to a nasal cavity and to withdraw waste water flowing from the nasal cavity to the water return channel.