Allergic rhinitis in adults may be considered for nasal spray treatment with Reynocort, Cochlear, and Endosulfan. Specific instructions for use and dose reduction are as follows: 1. From the first week to the eighth week, spray once a day in the morning after waking up, with two sprays on each nostril. 2. From the ninth week to the tenth week, spray once a day in the morning after waking up, and spray once on each nostril. 3.Week 11 to week 12, spray every other morning after waking up, one spray for each nostril. 4.Week 13 to week 14, spray every three days in the morning after waking up, one spray for each nostril. 5.Week 15 to week 16, spray every four days in the morning after waking up, one spray on each nostril. 6.Week 17 to week 18, spray every five days in the morning after waking up, a spray on each side of the nostrils. 7.Week 19 to week 20, spray every six days after waking up in the morning, one spray for each nostril. 8, the twentieth week, stop the drug. Precautions for the use of nasal spray 1, allergic to the main components of the nasal spray is prohibited. 2, regular use of drugs, preferably in the morning. 3.Preventive treatment 2 weeks-4 weeks before the onset of the season, if the drug flows into the mouth, you should rinse your mouth in time. If rhinorrhea occurs, suspend the use of the spray in the nostril on the bleeding side and switch to oral anti-allergic drugs such as Keratan and Kestin.