To quantitively analyze the method and effect of shield-embedded channel optimization, establishing a graphic and parameter system based on standardized layout of shield tunnel sections. A mathematical model of optimizing embedded channels and accurate Calculation Formula for Channel Optimization under Common Point Location Conditions was achieved by quantitatively analyzing the optimizable range of standard segments at points 1, 15, 3 and 13 commonly used in straight tunnel sections based on an actual project and construction experiences. By testing in the Hangzhou-Shaoxing Intercity Railway Project, make use of the mathematical model of optimizing embedded channels ,a theoretical optimization rate of 44% for both two-point groups was calculated, which has practical application value for actual projects. The mathematical model of shield construction points and channel optimization for each segment provides a theoretical basis for the shield-embedded channel production, transportation and installation of channel-optimized segments, and can be a reference for other similar studies.