For the needs of the end-to-end time delay detection of a wireless network in two-way communication in the project, this paper has conducted in-depth research and proposed a GPS receiver for clock synchronization, multi-site networking, end-to-end Wireless network communication time delay detection method based on real-time process project which works on the Delta System. According to the method, a communication detection system based on upper computer and lower computer is designed and implemented. After many tests and samples, statistical theory was used to give more accurate data of delay detection results. The method proposed in this paper fully considers its impact on the test results from many aspects such as clock synchronization, operating system selection, and software design and result analysis methods. Accurate, real-time, excellent, and reasonable methods are used to improve the accuracy of test results.