The data collection of the present study was collected by having a questionnaire as a research tool. The questionnaire focused on Helmet wearing behavior of student in faculty of Public Health 4th at Khonkaen university. IT has three sections: section 1 describes the General information part 2: knowledge about the helmet and part 3 behaviors to wear a helmet.Student in faculty of Public Health 4th at Khonkaen university for 50 people that the majority of answered the questionnaire were females 40 people (80%) and male 10people (20%). The majority program education is divided into Occupational Health and Safety 25 people (50%), second program education is Environmental Health Science and Occupational Health and Safety 15 people (30%) and last program education is Environmental Health Science 10 people (20%). The questionnaire is divided into three sections: section 1 describes the General information part 2: knowledge about the helmet and part 3 behaviors to wear a helmet. In the part of knowledge about the helmet found The respondent has knowledge about the helmet law is a little unknown. Everyone knows that the law to wear a helmet every time you ride the motorcycle. Most people know the law, put the helmet and rider and a passengers were 41 people have little knowledge of 9 people. Most people know the meaning of the helmet 46 people have little knowledge of the 4 people. Most people know the driving a motorcycle or passenger must wear a helmet to put the chin strap every time 43 people have little knowledge of the 7 people. Most people know the helmet is right there three type, 1) Full face helmet, 2) Open face helmet, 3) Half face helmet with 45 people have little knowledge of the 5 people.