In 2019，the auto parts market will face the same severe test as the whole vehicle market. This report describes the development and changes of auto parts market in 2019 from the perspective of enterprise and technology development through three aspects：engine and transmission technology upgrading，new “four modernizations” technology application and quality control transformation. It shows the changes of market structure，and summarizes and analyzes the measures taken by various enterprises from the aspects of technology，science and technology and management Methods，reflect the enterprise and even the entire parts industry to actively face the challenges brought by market changes and determination.