Clinical use of saline nose drops can assist in the treatment of rhinitis by cleaning the nasal passages and then using a syringe to drip water into the nasal passages and finally spitting it out of the mouth. 1. Cleaning the nasal cavity: After blowing the nasal secretion out of the nasal cavity, gently wipe it with tissue paper to ensure that the internal environment of the nasal cavity is clean. 2. Saline drip: According to the doctor’s instruction, you can use a 5ml or 10ml syringe to extract an appropriate amount of saline with the syringe, and then pull out the needle in time. Then use the syringe to drip slowly into the nasal cavity, the speed should not be too fast, too fast easy to cause choking. Should not be too slow, too slow should be too little water flow, can not play a corresponding role. 3. Head posture: head down and lean forward when rinsing, rinse the right side of the nasal cavity, head to the left, and vice versa. 4. Oral spit out saline: let the saline drip slowly from the nasal cavity, through the total nasal passage through the middle nasal passage into the posterior nostril, and then through the nasopharynx from the mouth inside spit out. Clinically, normal use of saline drops in the nose will not be uncomfortable, if there is discomfort or aggravation of the original condition, it is recommended to seek medical treatment in a timely manner.