The invention discloses a system for preventing parachute cords from intertwining. The system comprises parachute cords (3) and a parachute pack (6) and further comprises a limiting device; the limiting device comprises an annular strap (1) and a metal ring (2); the annular strap (1) adopts a hollow annular structure; the metal ring (2) adopts an annular structure; the metal ring (2) is arranged in the hollow annular structure in a sleeving manner; the main body part of the parachute is arranged in the parachute pack (6); each parachute cord (3) is uniformly divided into a plurality of strandsof sub-cords; the strands of parachute cords (3) are uniformly distributed on the outer side of the annular strap (1) in sequence; and the parachute cords (3) are arranged in a manner of being perpendicular to the annular strap (1) and fixedly connected to the upper end and the lower end of the annular strap (1). The invention further discloses a method for preventing the parachute cords from intertwining. According to the system for preventing the parachute cords from intertwining provided by the invention, through the fixing and limiting functions of the annular strap and the steel wire ring, the different parachute cords are separated in sequence, so that the parachute cords are prevented from intertwining.