Semiconductor equipment includes vacuum modules, optical modules, electrical and reactive gas modules, fluid modules, wafer and mask transfer modules, heat treatment modules group etc. In 2022, the total sales of global key modules will be approximately US$22.9 billion, with a growth rate of 15.2%, which is closely related to the development trend of the semiconductor equipment market. The development of key modules of semiconductor equipment has gradually been valued by Taiwan players. This article analyzes the types of key modules, detailed items, sales, and major manufacturers in semiconductor equipment industry, and explains the industry trends of key modules in the future. It is hoped that it can be provided to Taiwanese research and industry with a clearer development direction.