This study evaluates the factors affecting digital transformation for small and medium enterprises (SMEs) in Hanoi city. The research team determined the factors affecting digital transformation for small and medium enterprises based on some models such as the Theory of reasoned action (TRA), Technology Acceptance Model (TAM), Theoretical of planned behavior (TPB), C-TAM-TPB model and Unified Model of Technology Adoption and Use. The research results identify the model of factors that affect the argument transformation SMEs in Hanoi city, including (1) Perceived usability; (2) Perceived behavioral control; (3) Social influence; (4) Expected efficiency, (5) Convenient conditions and (6) Risks existing in digital transformation. The results also show that there are 6 factors affecting the implementation of the credit union of SMEs in Hanoi city, of which 5 factors have positive effects and 1 factor has negative effects. In addition, the results also show that there are certain differences in the intentions and decisions of digital transformation between different types of enterprises.