Pull-ups (horizontal bars): Enhance the strength and endurance of upper limbs, shoulders and back muscles, improve cardiorespiratory function, and exercise physical coordination; Rib bars: exercise strength and endurance of waist and abdomen muscles; Ladder: Enhance the muscle strength of upper limbs, chest, back and abdomen, and improve physical coordination; Climbing poles: Enhance the upper limbs, shoulders and chest strength and endurance exercise physical coordination and increase interest.