The purpose of this thesis was to investigate the recent condition of Atayal junior high school students' participating in leisure activities in Ilan county and make suggestions of improving aboriginal junior high school students' participating in leisure activities. The subjects for the study were Atayal junior high school students in Ilan county. There were 448 students. The study employed questionnaire to conduct general investigation. It also interviewed 15 local aboriginal growups. The independent variables were students' gender, location, their parents' education levels and careers; while the dependent variables were leisure cognitive, leisure participating motivation, leisure-activity types and leisure-activity trouble. Hypothesis were tested by t-test, one-way analysis of covariance and x² test. And analyze the records of interview to fulfill the conclusions. The results of the study were summarized as followed: I. About leisure cognitive Those whose parents' education levels are junior high school get more scores than those whose parents were not educated. II. About leisure participating motivation i. The lower parents' education levels and career levels are, the higher the need to increase knowledge is. ii. The higher their mothers' education levels are, the more important to improve technology and ability students felts. iii. Those who live in city areas and mountain areas and whose mothers' education levels and career types were lower will agree to develop a healthier body as a leisure participating motivation. iv. Those whose mothers' education level and career types were lower agree relaxing themselves, decreasing intension and pressure as leisure participating motivation. III. About leisure activity types i. The leisure activity type which Atayal junior high school students in Ilan county participate most often is entertainment-type activity; the second one is sports-type activity; the third one is usefulness-type activity. ii. Of sports-type activity, the Atayal junior high school students play balls, games, and run most often. Of art-type activity, reading is the most popular. Of usefulness-type activity, taking care of younger brothers and sisters is the majority. Of social-type activity, playing in relatives' or friends' houses is the majority. Of entertainment-type activity, listening to radio or music is the majority. iii. The first eleven leisure activities which aboriginal junior high school students do most and like most are playing a ball, swimming, listening to radio or music, barbecuing picnicking, singing, watching TV or video, playing computer games, reading comic books, and mountain-climbing. iv. The results of interviewing aboriginal grownups' leisure activities in their high school age are different from those of today's Atayal teenagers. For example, hunting, waving, playing in the water, singing, fishing, dancing, doing part-time job, doing housework are not done today. IV. About leisure time i. At work, the daily average leisure time is about one to two hours. ii. On weekends, the total average leisure time is two to four hours. V. About leisure activity trouble i. Nine leisure activity troubles are designed. And the items are divided into agreement and disagreement. The rate of disagreement is higher than that of agreement. ii. The relationship of different variables to leisure activity trouble (1) Question 2- no places: among those who agree with it, people living near the beach are more than people living in the mountains. (2) Question 4- nobody teachers: among those who agree with it, boys are more than girls. (3) Question 8- parents or teachers don't encourage: among those who agree with it, people living in the city are more than living in the mountains. Those whose parents' education levels are higher are more than those whose parents' education levels are low. (4) Question 9- no partner and family accompany them: among those who agree with it, those whose mothers are not educated are more than those whose mothers' education levels are junior high school. As the results of this study mentioned above, some of the suggestions were discussed in Chapter V for developing aboriginal junior high school students' leisure activities and for more researches in the future.