Prevention and control: Strengthen feeding management, chicken house should pay attention to cold and humidity prevention, ventilation, the implementation of "all in and all out" feeding mode, avoid mixed breeding of chickens of different ages, do not buy fungus chickens from the field. Once sick chickens are found, they should be treated in isolation. Immunization with Haemophilus paragallinarum vaccine has a certain effect in preventing the disease. Because there is no cross-immune protection between different serotypes of Haemophilus paragallinarum and only partial protection between different subtypes of the same serotype, it is better to choose a vaccine containing three serotypes A, B and C. There are many medicines for infectious rhinitis in chickens, among which sulfonamides are the most effective. Sulfamethoxazole can be used to dissolve in drinking water with baking soda at a rate of 0.05% for 7 days. Sulfonamides have more side effects. They should be stirred evenly to prevent poisoning. In addition, because rhinitis is prone to recurrence, a course of treatment should be repeated after 3 to 5 days interval to consolidate the treatment. Other antibiotics, such as florfenicol, avant-garde mycin, kanamycin, gentamicin, streptomycin, neomycin and erythromycin, are generally dissolved in water at a weight of 5-20 mg per kilogram. Serious cases can be treated with streptomycin by intramuscular injection, 30,000-50,000 units per day for 5 days. Our company's H type layer chicken equipment in India will give you more help.