It should be that the nasal mucosa has not subsided. Suggest to try the method of washing nose with salt water (refer to China Rhinitis Green Treatment Network). This method does not need drugs and has no side effects. It is especially suitable for children and pregnant women and can be used for a long time. It has good therapeutic effect on chronic rhinitis, sinusitis and allergic rhinitis. Mastering the concentration, temperature and operation method of saline can relieve symptoms and eliminate inflammation, and insisting on using it can effectively prevent recurrence. Rhinitis can't be cured, and it is easy to relapse. Preventing colds at ordinary times can effectively reduce the probability of rhinitis.