The main purpose of this research was to discuss the influence on external factors and the tests of trials in long jump. A total of 119 students were picked randomly from the third, fourth, fifth, sixth graders at Shia-Keng elementary school in Luju, Kaohsiung in 2002. The researcher collected the data from these 119 students. These students were taught two sessions in a week; each session was forty-five minutes. After these students were tested, the researcher gathered the data from the 119 case studies with SPSS 8.0.
