Besides, there was a statistically significant difference (p<0, 05) between sum of practice points and following factors: knowledge, attitude, reason to have breakfast, reason not to have breakfast, time to wake up, study major, living place, spending on breakfast, information from public communication, family and friends. Conclusions: The prevalence of the surveyed junior students of Hanoi Medical University, who had high point in knowledge, attitude and practice of having breakfast, was low, only accounted for one third to a half of the total sample.