In this paper, Netease Mumu simulator is randomly selected, and both simulators have passed the test in multiple environments. The following two simulators are commonly used by me (out of order) Simulator name We need to select the simulators that support WiFi proxy settings. There are a lot of Android simulators in China. It is suitable for app function test, APP security test, app development, back-end development, and people who are interested in app package capture. You only need to have a computer that can access the Internet to realize the analysis of APP packet capture, even the physical mobile phone can be unnecessary. This article has passed the test in MacOS 10.15.7 and windows 10 professional environment, and most of the material is based on MAC environment. The necessary skills for engineers to capture packages in app Since then, the ability of APP packet capture and analysis has become more and more efficient, and we will say goodbye to the confusion. This is a summary article of APP packet capture analysis, using the combination of APP simulator and web debugging agent tools. Briefly An Internet computer can complete the one-stop service of APP packet capture analysis.