Abstract: Infectious coryza was an important infectious disease which poses a great threat to chicken industry. This disease is characterized by high incidence and rapid transmission. Although the mortality rate was low, the secondary infections caused by other pathogens such as mycoplasma may emerge when timely control is lacked. In recent years, infectious coryza in chickens starts to exhibit some novel epidemic characteristics, especially the increasing prevalence of serum B-type strains of Haemophilus gallinarum at home. The commonly used vaccine products is failed to provide effective protective immunity against the new prevailing strains, which brings great difficulty to the prevention and control of the disease. Here, we summarize the epidemic characteristics of infectious coryza in chickens and propose comprehensive prevention and control strategies, so as to betterly prevent and control this disease.