The invention discloses a method for planting agaricus bisporus, which comprises the following steps of: proportioning, sterilizing at high temperature, cooling, inoculating, bagging and producing bacteria, wherein the sterilizing at high temperature is to place the mixed agaricus bisporus cultivation medium into a high-temperature stirring kettle, the temperature is 121-126 DEG C, the pressure is0.155-0.160MPa, the reaction time is 1.5-2.5 hours, the sterilized high-temperature stirring kettle is cooled to 23-27 DEG C in 1-2 hours; according to the invention, (1) the agaricus bisporus cultivation medium is sterilized at high temperature before being bagged, so that the foreign bacteria can be prevented from being introduced during the bagging process, and after the high-temperature sterilization, the subsequent processes are carried out in a sterile environment, so that the pollution rate is greatly reduced; (2) when the high temperature sterilization is carried out, the pressure is0.155-0.160MPa, so that the sterilization time is shortened to nearly one-tenth; (3) when the temperature is reduced, the method for replacing aseptic air is used, so that the cooling time is greatlyshortened, and no foreign bacteria is introduced during the accelerated cooling process.