The invention discloses an anti-tension hook spring comprising a spring body and an elastic sleeve wrapping the spring body and further comprising a limiting rope connected with a base. The two end dense sections of the spring are tightly connected with the base. The base is tightly connected with a hook. A jeans button is arranged at the inner end face of the base and is connected with the limiting rope. Through the design, the condition that the joint of the spring and the hook is deformed due to too large acting force is avoided during tension, the maximum tension amount of the spring is limited by the inside rope, safety of the spring during use is ensured, and thus the service life of the spring is longer.