Spiral bevel gears are critical transmission components in high-end equipment such as helicopters, automobiles, railway vehicles, and robotic joints. Their tooth surface shapes need to be specially designed and processed according to specific contact characteristics. This paper proposes a closed-loop solution for the design, analysis, and manufacturing of Spiral bevel gear tooth surfaces. Combining local synthesis principles and conjugate differential surface principles, It utilizes the flexibility and parameterized tool adjustment of fully CNC machine tools to actively control the tooth surface contact characteristics. Utilizing boundary element method (BEM) and Hertz contact theory to achieve rapid loading contact analysis (RLTCA). Proposed A precise correction method for the processing parameter reverse tuning to eliminate the deviation of tooth profile. The above research overcomes key technologies in the development of high-performance bevel gears, An integrated software system for spiral bevel gear design and manufacturing has been developed, providing efficient software tool support for constructing a domestic high-performance bevel gear design and manufacturing closed-loop technology system.