Dioxin is a kind of POP and 90% of dioxins present in the atmospheric environment come from the incineration of urban and industrial waste. Wood, petroleum products and all kinds of wastes, especially medical wastes which contain gasoline and coal, are easy to produce dioxins at combustion temperature. The production of polyvinyl chloride plastic, paper, chlorine and certain pesticides as well as the smelting of steel can release dioxins into the environment. There are three main ways to cause dioxins: first, in the combustion process of vinyl chloride, when the combustion temperature is lower than 800 ℃, the waste chlorine cannot burn completely, which is easy to generate dioxins. dioxins. Second, other materials containing chlorine and carbon, such as paper, wood products, and food scraps, generate dioxins through the catalytic action of copper, cobalt, and other metal ions. Third, dioxin is derived from the manufacture of chemicals, including pesticides, especially chlorinated chemicals, such as pesticides, herbicides, wood preservatives, deciduous agents, polychlorinated biphenyls and d other products. In addition, if the TV is not cleaned in time, the dust accumulated in the TV is usually detected by dioxin bromide. And the content is higher, with an average of 4.1 micrograms of brominated dioxins per gram. Although dioxin is of local origin, its distribution in the environment is global. Almost all media in the world contain dioxins. Where these compounds accumulate most is in soil, sediments, and foods, particularly dairy products, meat, fish, and shellfish (Griffin, 1986). Its content is very low in plants, water and air. Dioxins mainly pollute air, soil and water, and then pollute animals, plants and aquatic organisms. People are injured primarily by air, water, a... middle of paper ...... pg, and many national standards were 10 pg, the US Environmental Protection Agency standard The environment was 0.01 pg, and some countries set others. objective standard in addition to this standard. Several suggestions discussed above are inseparable from monitoring, which suggests that dioxin analysis is the fundamental link in preventing dioxin pollution. Works CitedAndersen, ME, Mills, JJ, Gargas, ML, Kedderis, L., Birnbaum, LS, Neubert, D. and Greenlee, WF (1993). Modeling receptor-mediated processes with dioxin: implications for pharmacokinetics and risk assessment. Risk Analysis, 13(1), 25-36. Griffin, R.D. (1986). A new theory of dioxin formation in municipal solid waste combustion. Chemosphere, 15(9), 1987-1990. Mocarelli, P., Brambilla, P., Gerthoux, PM and Needham, LL (1997). Change in sex ratio with exposure to dioxin. The Lancet, 348(9024), 409.