This paper investigates the impact of capital structure on the performance of commodity and service firms listed on the Vietnamese Stock Exchange. Data used in the paper were collected from the 142 firms listed on Ho Chi Minh and Ha Noi Stock Exchange during time 2009-2015. By using the descriptive statistics and linear regression model, the findings shows that there is negative relationship between capital structure (e.i. STD. LTD and DA) and peformance of the firms (i.e. ROE) for the commodity and services firms listed on two given Stock Exchange Market of Vietnam. Following are possible implications for the study.