Recently,the outbreaks of H5N8 subtype highly pathogenic avian influenza(HPAI)were reported in succession in 14 countries of Europe,Asia and Oceania. In Europe,the epidemic of H5N8 avian influenza showed characteristics of fast transmission and infection in poultry by wildfowl. Based on the analysis,the H5N8 subtype strain caused this epidemic belonged to the clade of 2.3.4.4,which located in the same branch with the global epidemic H5N8 stain in the year of 2014—2015. But the virus had a genetic mutation. Besides,this epidemic was caused by the AI infection in wild birds,and the migratory birds played an important role in the disease transmission across the world. Given the epidemic situation in surrounding countries and the bird migration,the occurrence risk of AI infection in poultry of China was high. Hence,some proposals were put forward,including doing a good job in vaccination, strengthening surveillance for poultry and wildfowl and enhancing the level of bio-safety and protection in poultry farms.%近期H5N8亚型高致病性禽流感疫情相继在欧洲、亚洲和大洋洲部分地区的14个国家暴发。其中，欧洲疫情呈现出传播迅速、野禽传染家禽的特点。分析发现，此次流行的H5N8亚型禽流感病毒属于第2.3.4.4分支，与2014—2015年在全球流行的H5N8病毒属于同一个分支，但病毒已发生了较大变异；此次在欧洲开始暴发的H5N8疫情主要由野生鸟类引起，候鸟在此次禽流感病毒环球传播中起主要作用。伴随着候鸟迁徙和周边国家的疫情形势，我国家禽发生禽流感疫情的风险较大，提示应做好疫苗的免疫工作，加大对家禽和野鸟的监测力度，提高养殖场的生物安全防护水平。
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