In order to analyze the variation of basic physical fitness caused by alcohol intake, 12 students who are majored in physical education were rendomly chosen. They were divided into 3 Groups, and given 50ml(Group A), 100ml(Group B). l50ml (Group C) of alcoholic liquors(Susung Koryangju : Alcohol 40%) respectively. After that they took a rest. The school concentration in blood was measured three times at an interval of 45 minutes. Each group had a basic physical fitness test about five items (Hand grip strength, Sit-ups, Stick test, Sargent jump, Reaction time). The result were summarized as follows : 1. After 45 minutes, Group A and C showed their maximum values of alcohol concentration in blood were 0.25±0.05 ㎎/㎖, 1.05±0.05㎎/㎖. The maximum value of Group B was 0.525±0.025 ㎎/㎖ after 90 minutes. 2. After 135 minutes, alcohol concentration in blood was decreased conspicuonsly than before. Group A was 0.05 ㎎/㎖ Group B was 0 377±0.025㎎/㎖, and Group was 0.80±0,75 ㎎/㎖. 3. In Hand grip strenght test and Sit-ups test, Group C was weakened conspicuously. 4. There was much difference in Stick test among the three Groups. Group C Showed evident decrease in Stick test. 5. Only Sargent jump test was increased than before drinking. 6. Reaction time test to sound was much faster than that to light. The majority of the students reacted fastest to forward and backward Reaction time among the direction lights(foward, backward, left, right), and fastest to Blus light among the color lights(red, green. yellow, blue). But there was no much difference of direction lights and color lights about alcohol concentration in blood. 7. The weakness and improvement of basic physical fitness were in proportion to the amount of alcohol intake.