This research was conducted to evaluate and measure the capabilities of management and operating small and medium-sized enterprises in Hai Phong City. Small and medium-sized enterprises in Hai Phong City with limited resources are facing fierce competition in the context of increasingly deep international integration. A survey was conducted through the analysis of survey data from 210 respondents working in small and medium-sized enterprises in Hai Phong City, including middle managers and employees. Analytical methods such as independent t-tests and ANOVA analyses are used to test and measure the scales. Analysis results based on descriptive statistical methods, comparison methods with an independent T-test, and ANOVA analysis show that, there is no statistically significant difference in the capabilities of management and operating small and medium-sized enterprises in Hai Phong City of Leaders between these different genders, job position, labor scale, and main business sectors. There is a statistically significant difference in the capabilities of management and operating small and medium-sized enterprises in Hai Phong City of Leaders between these different academic levels, and professional seniority. This research uses the contents of the theoretical and practical basis for human resource management in general and the capabilities of management and operating firm leaders in particular. Within the context of international economic integration, these variables are useful solutions for SMEs. The paper's primary contribution is findings that benefit the SMEs in Hai Phong City in the improvement of their scale expansion and business performance. Therefore, SMEs should focus on enhancing the capacity of their board of directors, thereby improving their leadership and management capabilities and contributing to improved business performance.