The deployment effect of space net is the key to the success of space net capture mission. However, the performance indexes and design parameters of space net development are various, and a single simulation test takes a long time. In order to avoid the extremely time consuming simulation tests which contain all kinds of factors, the orthogonal experiment design method is considered to reduce the number of tests. This paper carries out the sensitivity analysis for the design parameters which affect the effect of the space net development. Firstly, the performance indexes and design parameters are defined. Then, based on the orthogonal experiment design, the simulation test is carried out and the orthogonal test results are obtained. Finally, parameter sensitive analysis of every performance index is performed by means of range analysis method and variance analysis method. Through this study, the numbers of design parameters and performance indexes is simplified, laying the foundation for the next step in optimizing the design of the space net.