Enterprises can make full use of digital elements to solve operational hardships, improve business competition and anti-risk capabilities. Intelligent transformation and digital transformation have become an inevitable choice for enterprises to overcome?the?adversity. There are many difficulties in small and medium-sized manufacturing enterprises, such as funds weak, narrow business scope and single target market. Their digital transformation stage and the selection of technology paths are different from large-scale manufacturing enterprises. It is necessary to gain insight into the key bottlenecks in the transformation of small and medium-sized manufacturing enterprises and discuss the transformation paths and countermeasures based on practical problems. The bottleneck problems of small and medium-sized manufacturing enterprises digital transformation are sort out , the characteristic factors in different stages of its development process are explored, the dynamic evolution paths of small and medium-sized manufacturing enterprises digital transformation are proposed. Furthermore, it is necessary to increase the top-level planning consciousness, highlight business strategy orientation, focus on organizational security construction, lead enterprise transformation and exploration, build resource sharing platform, improve technical standards, to promote the development of small and medium-sized manufacturing enterprises digital transformation.