Negative emotion is a serious human problem because it is associated with the increase of students’ misbehaviour and negatively affects students’ learning process and learning outcomes. It is not clear whether the differences in students’ negative emotions in terms of gender, grade level and family status exist. The objective of this study was to find out the current situation of Vietnamese students’ negative emotions. The questionnaire was delivered to 1,200 students from lower-secondary school and upper-secondary schools in Vietnam. The SPSS software for Windows was used to analyse the data collected in the form of frequencies, percentages, means, standard deviations, t-tests and Anova test. The results showed that the mean score of students’ negative emotions is 2,1556, which corresponds to ‘Seldom’ level. There were no significant differences in students’ negative emotions in terms of gender and grade level. A significant difference in students’ negative emotions and family status was found. These findings suggest that the characteristics of students’ family should be paid attention to in order to help students’ negative emotions.