This paper aims to further expand the product design path, meet the needs of UAV users, and improve the detection UAV modeling design method.This paperintegrates Stage-Gate System (SGS) model in management into the product system development and design model; investigates user needs, combines tomographic analysis (AHP) to construct a judgment matrix, calculates the weight and ranking of various design indicators, promote design decisions, and completes detection UAV modeling design plan; the 7-point scale method is used to evaluate the preliminary plan design to verify the scientific nature of the design model and process. In conclusion, taking the detection of UAV modeling design as an example, through the construction of SGS product system development model, the proper use of AHP analysis method for the design scheme index decision, for detection of UAV modeling design to expand the design path, this paper provides a brand-new idea for the design of related products.