The invention discloses a method for accelerating to inflate an escape parachute at low altitude and low speed. A girdling rope and a delayed cutter are arranged on the escape parachute, the girdlingrope is tied at the waist part position of the outer side of a parachute canopy in a limiting way and can restrict the expansion of the parachute canopy, the delayed cutter is arranged near the girdling rope on the outer side of the parachute canopy, and the girdling rope penetrates through a cutting hole of the delayed cutter; and when the escape parachute is opened at low altitude and low speed,the escape parachute is limited by the girdling rope, the parachute canopy on the lower part of the girdling rope is quickly inflated, the bottom edge of the parachute canopy is quickly expanded, airinflowing is accelerated, then the delayed cutter reaches to a setting time so as to cut off the girdling rope, and the parachute canopy above the girdling rope starts to be expanded and inflated until being fully expanded. The method is capable of accelerating parachute canopy inflation and expansion performances, meets the demand on the inflation performance of the escape parachute at low altitude and low speed, and is safe and reliable in work, simple and convenient in installation and disassembly, and wide in use range.