The harm of feeding environment to poultry health and its regulation: the living environment of animals grows in the environment and returns to the environment. It can be seen that animal health is closely related to the change and development of the environment. Whether it is natural environment, social environment or geographical ecological environment, it will have different degrees of influence on animals, change their ecological balance and endanger their health, among which the feeding environment is in the main position. Environmental pollution is not only harmful to animals, but also has a great impact on human beings, which has increasingly attracted the attention of international organizations, governments and people. By expounding the influence of indoor layout, harmful gas and noise on animals, this paper summarizes the harm of environmental pollutants to animal health and its control countermeasures. _ _ has stepped into the ranks of poultry producing countries. With the continuous expansion of the production scale of livestock and poultry breeding industry in China, it has gradually developed into intensive factory, and diseases have also brought challenges to the development of poultry industry. Low-concentration toxic and harmful pollutants in the environment accumulate in the body all the year round, which leads to the decline of animal production performance, immunity and disease resistance, and farms are prone to large-scale epidemics, and even lead to large-scale deaths. In particular, zoonotic diseases are very harmful, such as highly pathogenic diseases, Newcastle disease, tuberculosis, chlamydia and mycoplasma diseases. Controlling microbial pollution in the air is an important research topic of livestock and poultry disease prevention and control, which has attracted widespread attention. 1. 1 The selection of livestock and poultry sites in the external environment of livestock and poultry houses is closely related to the prevention and control of diseases. Poultry houses should be built far away from towns and villages, and should be built in the outer suburbs of cities, away from underground drinking water sources, and 2 ~ 3 kilometers away from highways, and the influencing factors such as traffic, environmental pollution, noise pollution and pathogen transmission should be considered comprehensively. Low-lying and humid places are easy to breed bacteria and infect livestock and poultry, so it is best to choose places with high terrain and leeward, and the south and southeast are the best ways. In order to meet the requirements of livestock and poultry production for lighting, ventilation and drainage, the site should have an appropriate slope. 1.2 The layout of the internal environment of the poultry house should be effectively isolated between the production area and other facilities and equipment areas of the poultry house and between the fences, cages and pens in the house, so as to form an effective closed unit and avoid cross-contamination of clean roads and dirty roads. According to epidemic prevention requirements, fences or trenches should be built around livestock farms to improve epidemic prevention level. In the design of the entrances and exits of livestock and poultry houses, the less the better. Disinfection pools should be set at the entrances and exits with the same width as the doors to ensure that vehicles and pedestrians can be effectively disinfected when entering and leaving.