【正文】 s disease, Rabies, Anthrax, Brucellosis, Clostridiun welchii infection, Paratuberculosis, Toxoplasmosis, Echinococcosis/hydatidosis, Leptospirosis　　B) Bovine　　Infectious bovine rhinotracheitis, Malignant catarrhal fever, Enzootic bovine leukosis, Haemorrhagic septicaemia, Bovine tuberculosis, Bovine babesiosis/theileriosis, Trypanosomosis, Schistosomatosis japonicum　　C) Ovine and Caprine 　　Caprine arthritis/encephalitis, Maedividna　　D) Porcine 　　Porcine epidemic encephalitis B, Porcine parvovirus infection, Porcine reproductive and respiratory syndrome, Swine erysipelas, Swine plague（Swine pasteurellosis）, Swine streptococcosis, Atrophic rhinitis of swine, Mycoplasmal pneumonia of swine, Trichinellosis, Porcine cysticercosis　　E) Equine　　Equine infectious anaemia, Epizootic lymphangitis, Glanders, Equine piroplasmosis, Surra (Trypanosoma evansi)　　F) Avian　　Avian infectious laryngotracheitis, Avian infectious bronchitis, Infectious bursal disease (Gumboro disease), Marek39。 Exit Animal and Plant Quarantine”, make specific speculations on quarantine procedures and quarantine measures at import，export and transit stages, and quarantine for transportation means and the carrying and post goods so as to prevent animal and plant diseases and pests from introduction into and out of the country, protect plant and animal production and human health, and to promote development of trade with foreign countries.　　“Veterinary Drug Management Regulation” clearly specifies speculations for management of veterinary drug manufacturing and enterprises, veterinary pharmaceutical application and management in veterinary clinical and treatment services, new veterinary drug approval and registration, management of imported and exported veterinary drugs, veterinary drug supervision and quality control, veterinary drug trade marks and advertisement. The regulation speculates that production licensing system is practiced in veterinary drug manufacturing and license code management system is practiced for each veterinary drug product. The veterinary drug manufacturing enterprises shall meet the requirements specified in “Veterinary Drug Production and Quality Control Code ” (. GMP) and quality of veterinary drug products shall meet requirements in “China Veterinary Pharmacopoeia” and the Veterinary Drug Quality Standards issued by MOA. Without production license and product license code, no units or individuals are allowed to produce and deal with veterinary drug products, so as to ensure veterinary drug quality, control animal diseases effectively, promote development of animal husbandry and protect human health. 　　“Breeding Livestock and Poultry Management Regulations”clearly speculates that the breeding livestock and poultry producers can not apply a “License for Production of Breeding Livestock and Poultry” until they have had sound veterinary health and prevention conditions, and have taken environment protection measures.　　“Feedstuff and Feed Additive Management Regulation” clearly speculates that when producing feedstuffs and feed additive, veterinary drugs and prohibited drugs shall not be added. No hormones are allowed in medicated feed additives. The regulation also specifies the approving of new feedstuffs and new feed additives, management of veterinary drug importation, production and market management and quality control management, so as to ensure the quality of feedstuff and feed additive, promote feedstuff industry and animal husbandry development and protect human health. 　　2 The present situation of animal disease occurrence and the control measures　　 Categories of Animal Diseases in China　　The Ministry of Agriculture has speculated three categories of animal diseases. (See Appendix I)　　 Animal disease occurrence in China in 1999　　In 1999, the Chinese Government notified FAO, OIE and the countries in the world of　20 animal diseases occurred in China through “ Official Veterinary Bulletin”. They are foot and mouth disease, swine vesicular disease, bluetongue, sheep and goat pox, classical swine fever, highly pathogenic avian influenza, Newcastle disease, porcine reproductive and respiratory syndrome, swine cysticercosis, anthrax, rabbit haemorrhagic disease, fowl cholera, rabies, duck virus enteritis, glanders, swine erysipelas, equine infectious anaemia, brucellosis and Marek’s disease.　　　Diseases of Category I　　Foot and Mouth Disease　occurred in May1999, respectively in Ningde city in Fujian Province, Baisha country in Hainan Province and Rikeze prefecture in Tibet, with 1215 infected and susceptible cattle and pigs. All the 1215 animals were killed.　Type O virus was detected and confirmed by the National Key Laboratory to be the cause of outbreaks.　　Immediately upon the confirmation of the outbreaks, the local government defined and blocked the infected areas, slaughtered all the infected animals and herds. And emergent vaccination was conducted for all the susceptible animals in the infected area and its surrounding areas. The contaminated and possibly contaminated sites, articles, facilities and equipment were thoroughly disinfected. Movement control of animals inandoutside the infected area was imposed and vehicles moving in and out of infected area were disinfected.　　6 successive months of monitoring the susceptible animals in the infected area and the area within a 50km radius showed that no new outbreaks had occurred, and the blockage was then lifted accordingly.　　To prevent the introduction of the disease from outside into the country, China has established foot and mouth disease surveillance zone in areas directly bordering with the countries in Southeast Asia, South Asia and North Asia but without natural or geological barriers. Vaccination against foot and mouth disease will be conducted in theses areas when necessary.　　Swine vesicular disease did not occur in China in 1999.　　Blue tongue did not occur in China in 1999.　　Highly patho