The purpose of this study was to analyze effects and corretaIirn on the body fat, ll1llScle mass and visceral fat with an exercise program of Oreum trekking Participants selected as subject were consisted of healthy men and women(men[n=12] women[n=7] mean age: 23.31±1.76 yrs, mean height: 170.45±7.31 cm, mean body mass: 66.50±10.84 kg, mean body mass index: 22.73+2.30 kg/m2). The exercise program of Oreum trekking were performed for 4 hours(trekking: 50 minute, rest10 minute) with trekking speed at a 4 km per hr. during 6days. As a result, the following conclusions obtained were as follows. The body fat, visceral fat area and visceral fat showed rrnre decrease according to periods of Oreum trekking exercise. Also, ll1llScle mass didn`t show significant difference statistically according to periods of Oreum trekking exercise. The body fat showed similar rorrelatian pattern; with visceral fat(r =.678[R2=46%]), with visceral fat area(r ~.878[R``=77%]) decrease of according to periods of Oreum trekking exercise. Also, visceral fat showed similar correlation patterns with visceral fat area(r=932[R2=869%])