This paper aims to evaluate the awareness and behavior of using environmentally friendly products in case of plastic straws using the theory of planned behavior. Exploratory Factor Analysis (EFA) and linear regression analysis were employed to determine and evaluate the influential factors on the intention of using environmentally friendly straws and alternatives among young people in Mekong Delta provinces. The data were randomly collected from 150 interviewees as research respondents who are aged from 18 to 33. The results show that the intention to use environmentally friendly straws depends on factors including (1) Attitude, (2) Environmental awareness, (3) Subjective norm, (4) Perceived behavioral control and (5) Perceived effectiveness.