Water pick

The invention provides an oral irrigator, and relates to the technical field of oral cavity cleaning, the oral irrigator comprises a buffer cavity, a push-pull module and a nozzle, the side wall of the buffer cavity is provided with a water inlet and a water outlet which are communicated with the inside and outside of the buffer cavity, the water inlet is provided with a one-way water inlet valve structure, and the water outlet is provided with a one-way water outlet valve structure; the spray head is connected with the water outlet; at least one part of the side wall of the cache cavity is of a film-shaped elastic structure, the push-pull module is connected with the outer wall of the film-shaped elastic structure, and the push-pull module is used for pushing the film-shaped elastic structure to move towards the inner side of the cache cavity or pulling the film-shaped elastic structure towards the outer side of the cache cavity. 本发明提供了一种冲牙器，涉及口腔清洁的技术领域，冲牙器包括：缓存腔体、推拉模组和喷头，所述缓存腔体的侧壁上设置有连通其内外的进水口和出水口，且所述进水口处设置