The invention discloses a production method for super-strength chinlon 66 fiber. The production method comprises the main steps of nylon 66 saline solution, concentration polymerization, spinning, cooling, oiling, drafting forming and winding. The production method is simple in technology and easy to implement, batched and continuous production of the super-strength chinlon 66 fiber can be achieved, the production efficiency is high, the yield is large, the performance of product batch pieces is uniform and stable, the breaking strength of the obtained super-strength chinlon 66 fiber reaches 10.0-10.4 g/d, the elongation at break reaches 16-22%, the elongation rate under the constant load reaches 10.5-13.5%, the dry hot shrinkage rate is 4.7-7.7%, the strength retention is larger than 90%,and the method has the advantages of being high in strength, low in unit weight, good in fatigue resistance, impact resistance, friction resistance and heat resistance and the like.