The work aims to study the response regularity of quick-wear parts under drop impact conditions with the suspension system of quick-wear parts considered as the object. Dimensionless dynamic model was built and the fourth order Ronge-Kutta method was adopted to analyze the displacement and acceleration response of quick-wear parts. The effects of such parameters as suspension angle, frequency ratio, damping ratio and dimensionless shock velocity of the system on the displacement and acceleration response of the quick-wear parts were discussed. The effects of suspension angle, frequency ratio and damping at the joint between the main body and the base on quick-wear parts response are noticeable. With the increase in the system’s suspension angle, the acceleration response amplitude of quick-wear parts would be increased, the displacement response amplitude would be decreased and the response cycle would be shortened. The increase in frequency ration could effectively restrain the response amplitude of quick-wear parts. Under the drop impact conditions, in order to design the suspension system, proper suspension angle, frequency ration and other relevant parameters should be selected, so as to meet the requirements for product protection.