The invention provides a polysilicon production technology. The polysilicon production technology comprises mixing refined trichlorosilane and hydrogen according to a ratio to obtain a raw material, orderly treating the raw material through a bubble vaporizer, an inlet and outlet gas heat exchanger and a CVD reduction main furnace, mixing refined trichlorosilane and dichlorosilane according to a ratio to obtain an accessory material, treating the accessory material through a chlorosilane vaporizer to obtain accessory material gas, through the CVD reduction main furnace, producing polysilicon from the raw material gas obtained by the bubble vaporizer, mixing the side product as intermediate tail gas and the accessory material gas through a static mixer, feeding the mixed gas into a CVD reduction accessory furnace, carrying out a reaction process on the intermediate tail gas and the accessory material gas on the surface of a silicon core in the CVD reduction accessory furnace to obtain polysilicon, carrying out heat exchange between the side product as finished tail gas and the raw material gas through the inlet and outlet gas heat exchanger, and feeding the mixed gas into a reduced tail gas recovery system. The polysilicon production technology improves a polysilicon generation rate and a deposition rate and reduces the material total amount of the finished tail gas.