Abstract AI (Avian Influenza) it is originally a kind of epidemic disease infecting among the poultry, once the poultry are infected with the Avian Influenza, will cause high death rate and even the poultry do not die and recover may cause productivity drop : laying hens decrease egg production, breeders reduce hatchery, broilers have poor weight gain, therefore increase the farmers producing cost. And in order to prevent Avian Influenza farmers have to avoid infecting and use the right vaccines. But the Taiwan environment is open disinfectant can do not much . The directly effective method is to use the vaccines.But Taiwan no one produces the vaccines at present, the government has not allowed vaccines to import yet either. Even government allow to import but there are too many serum types of the Avian Influenza, and the types do not have cross protect , let farmers have no effective method to prevent the Avian Influenza. once the avian got infection the farmer losses much. The Avian Influenza happens for many years in the poultry, with the time and mutation of the virus, the Avian Influenza become to high pathogenic Avian Influenza (High pathogen Avian Influenza, is abbreviated as HPAI) and infect to the human being . The poultry industry is very important in the animal husbandry of Taiwan, occupy the important position in agricultural production. NowTaiwan farmers not only have to face the internal Avian Influenza infection problem but also to face the step that opens with the internationalization of accession to the WTO. The animal husbandry of Taiwan has produced and faced the serious impact. Though high pathogenic Avian Influenza did not happen in Taiwan yet, but some parts of the world release the case of infecting successively, some cases even cause death. World Health Organization (WHO, World Health Origanization) monitor and control tightly, and prophesy Avian Influenza will lead to the fact that prevails greatly. This research studies the past events in the animal livestock and finds the effect and change of the market. Also use SWOT to know present animal livestock situation.And then to know the changes of high pathogenic Avian Influenza happened in Taiwan (HPAI, High Pathogen Avian Influenza), Finally gives some recommend and strategy to G company. Key words: AI (Avian Influenza), HPAI, High Pathogen Avian Influenza, WTO, Animal production, Strategy