Aircraft wing box assembly production line working platform and using method thereof

The invention discloses an aircraft wing box assembly production line a working platform and a using method thereof. The working platform comprises a main platform, a supporting frame, a guardrail, apulling plate structure, a quick mounting pedal and retractable stairs. The main platform is fixed at the upper part of the supporting frame, the guardrail is arranged above the main platform, three sides of the guardrail are enclosed, one side of the guardrail is open, trundles are arranged below the supporting frame, and the main platform and the supporting frame are integrally movable; and themain platform is provided with the pulling plate structure, the pulling plate structure is contained in the main platform when not used, the quick mounting pedal and the pulling plate structure are fixed in a sleeved mode and are detachable, and universal trundles are installed below the retractable stairs and can rotate within the range of 90 DEG. The working platform is convenient to operate, safe to use, beneficial to i