The invention discloses a nasal cavity laveur, which comprises a liquid storage head, a connecting sleeve, a suction nozzle and a plug ring. The connecting sleeve is inserted into the liquid storage head, the extension end of the connecting sleeve is provided with a pointed mouth, the suction nozzle is sleeved on the pointed mouth, the plug ring is in a hollow structure, and the plug ring is sleeved outside the suction nozzle. The invention has simple and reasonable structure and can lavage and collect nasal secretion of patients.