Regarding the problem that the existing anti-collision arresting system does not adapt to the new situation of large ships and formation of new ships，an active safety arresting scheme of large ship locks is proposed.By using a robotic arm to autonomously lay cables，the tension on the blocking cable is transferred to the friction energy absorption unit through the brake belt and guide pulley.The friction brake on the friction energy absorption unit gradually absorbs the kinetic energy of the fleet within the braking distance，and a series of methods are used to ensure the safe parking of the fleet during the lock period，eliminating the safety risks of ship stalling，speeding and hitting the ship's gate.At the same time，The feasibility and effectiveness of the arresting scheme are verified by numerical simulation.The results show that the scheme can satisfy a group of lock passing fleets with a displacement range of 8，750 t(no load)~30，000 t (full load)，the entering speed of 0.5 ms，the braking speed of 20 m braking distance，and the safe stopping of the ship.The safety of the miter gate of the ship lock and passing fleet are effectively ensured.