Machines have replaced manpower to finish lots or work through the development of business and information. A lack or daily exercise has turned the type of disease chronic. According to researches, health behaviors such as non-smoking, non-drinking, non-chewing betelnuts, exercise and eating low rat and low cholesterol rood are good to improve health and decrease the incidence rate or chronic diseases. School education is an important stage to cultivate personality and living behaviors. These health behaviors will have direct influence on students' future. We want to explore college students' health behaviors and self-conscious health conditions and analyze factors which affect these health behaviors. Results showed that two leading diseases or past history are hepatitis and asthma. Students with sufficient sleep and exercise everyday are only one third or all. Nighty percent of students are non-smoking and non-chewing betelnuts and eighty percent of them are non-drinking. Anxiety and depression, headache and stomachache are widespread in college students. A strong correlation exists among smoking, drinking and chewing betelnuts. There is also a strong correlation between anxiety and depression. Students those who are males, over 20 years old, in 4-year-program college, in departments of environment engineering and industrial safety. and live in northern Taiwan area have a higher smoking rate. Females have higher rate in stomachache and headache than males, 4-year-program college students are often more anxious than other students. Results of this study suggest that health education plans should he designed for demands or different students. To understand difficulties or students for improving health can develop useful and proper skills to achieve effectiveness.