The invention relates to a blast furnace air supply pipeline, in particular to an energy-saving environment-friendly air supply branch pipe. The energy-saving environment-friendly air supply branch pipe comprises a gooseneck, a compensator, a middle segment, a lower segment, and a straight blow pipe, wherein a piezometric pipe used for measuring temperature, pressure and volume of hot wind in the air supply branch pipe and a flow control valve used for adjusting the pressure of the wind in the air supply branch pipe are mounted in the middle segment; a multiple heat-insulating thermal insulation structure is arranged on the inner side of the metal steel shell of the air supply branch pipe. Due to flow rate and wind pressure adjustment, hot wind parameters of all air supply branch pipes can be consistent, so that smelting efficiency and molten iron quality of a blast furnace can be improved greatly, and energy consumption can be reduced; due to the multiple heat-insulating thermal insulation structure, temperature on the outer surface of each air supply branch pipe can be lowered effectively, temperature of hot wind sent into the blast furnace is raised, the operation environment is improved, and non-renewable energy is saved.