A nasal flushing device includes a catheter unit (3), a connection unit (313), and an injection unit (5). The catheter unit includes a catheter body (31), and a plurality of openings (32) formed in the body of the catheter, the catheter body having an open end (311) and a closed end (312). The connection unit has two ends, one end is a connect part connecting to the open end (311) of the catheter unit and the other end is a combination part connecting to the injection unit (5). The injection unit is a syringe like device which connects to the combination part of the connector.
