Purpose: This descriptive study was designed to investigative BMI(body mass index) and health behaviors in college students. Method: The subjects of this study consisted of 189 college women and 125 college men. Data were collected using self-report questionnaires from April 1 to April 10, 2005. Data were analyzed by the SPSS /pc 10.0 statistical program using frequency, t-test, $x^2$-test. Result: College women perceived themselves as more obese than indicated their BMI, and the most effective weight control factor was their response to images of people presented in the media. In general college men present more salubrious behavior than college women. Conclusion: The results suggest that health care providers need to educate female students about heathy behavior as well as the normal weight in BMI.