Nasal irrigator

The nasal irrigator comprises a bottle body, an irrigating cylinder and a first catheter or a second catheter, the bottle body is provided with a liquid storage cavity, an irrigating head is installed on the bottle body, and a water outlet is formed in the end, away from the bottle body, of the irrigating head. A first fixing cavity and a second fixing cavity are arranged in a flushing head, the inner diameter of the second fixing cavity is larger than that of the first fixing cavity, and a step surface is arranged between the inner side wall of the second fixing cavity and the inner side wall of the first fixing cavity. A second guide pipe is installed in the bottle body, before water flows from the second guide pipe to the first fixing cavity, a part of water flows impact a step surface to flow towards the bottle body, the resistance is increased, and then the water flow and the impact strength are reduced; or the second conduit is replaced by the first conduit, the water flow can quickly flow to the water