The invention relates to the field of springs, in particular to a corrosion-resistant spring which comprises a spring body, baffles and hooks. The two ends of the spring are connected with the baffles, the baffles are connected with the hooks respectively, and partition plates are connected between metal wires of the spring and bent inwards. The partition plates arranged between the metal wires can be bent inwards to separate the metal wires when being extruded, the goal of friction avoidance is achieved, and the corrosion-resistant spring has the advantages of being convenient to use, simple to operate and high in practicality.