The research is conducted for assessing factors affecting the implementation of Strategic Management Accounting (SMA) of medium - sized enterprises in Vietnam. Data was collected from 235 medium - sized enterprises of Vietnam for the period from 2019 to 2021. Based on quantitative research methods, the implementation of Strategic Management (SMA) and factors affecting this implementation were scrutinized. The results indicate that the implementation of Strategic Management (SMA) of medium - sized enterprises in Vietnam is influenced by factors: Technology level, Quality of accountants, Competitive level, Business strategy, and Business risk. Through findings, some recommendations are given for improving the implementation of SMA of medium – sized to satisfy the demand for information of the stakeholder in the context of integration.