The invention discloses a disinfectant used in the breeding industry. The disinfectant comprises the components in percent by volume: 20-30mL of a sodium hydroxide solution with the mass percent of 30-45 percent, 3-7mL of peroxyacetic acid, 5-9mL of chloramine, 12-17mL of a sodium bicarbonate solution with the mass percent of 20-45 percent, 4-12mL of absolute ethyl alcohol and 12-19mL of a saponated cresol solution. All components are stirred for a certain time at a normal temperature and a normal pressure, and sub-packaged and plastic-packaged to obtain the disinfectant. By adopting the mode, according to the disinfectant used in the breeding industry, disclosed by the invention, the components adopted by the disinfectant are low in price, so that the total cost of the disinfectant is reduced, the disinfection effect is good, a good medication effect can be achieved by only consuming less disinfectant, the medication efficiency is high, toxic and hazardous effects on bred livestock and fishes are avoided, and no toxin accumulation is caused.