The research intended to discuss the effect of the soccer training courses on the physical fitness of the fifth grade elementary school students. The research was aimed at the fifth grade students, forty-six people in two classes of Po-hau Primary School in Hsinchu County. The students were divided into two groups; one is experimental and the other control . The experimental group received the soccer training course which received low intensity and not to cause muscle tired, twice a week during eight weeks. The control group maintained regular lifestyle and without training courses. Both groups received physical fitness test before the experiment and after the experiment. The content of physical fitness test includes: 1. Body Mass Index; 2. Sit and reach; 3. One-minute sit up; 4. Stand jumping; 5. 800m jogging. After the experiment, the progress range was tested by interdependent sample t. The α-level was set at .05. The result indicated that the fifth grade elementary school students who received the soccer training courses had significant progress in power, muscle endurance and cardiovasculor except in body composition and flexibility. Besides, significant difference existed in power, muscle endurance and cardiovasculor between trained students and non-trained students.