Numerical simulation plays a crucial role in the functional design of toys.The application of numerical simulation technology enables designers to quickly and accurately evaluate the performance of numerous design schemes,and then optimize the product structure and func-tion to improve its quality and competitiveness.This paper explains the concept of numerical simulation,analyzes its application principles in the field of toy design,and deeply analyzes the application of numerical simulation technolo-gy in toy functional design,in order to provide some refer-ence for toy design in related fields.