This research developed e-study skill program based on study skill training method that is widely used for the improvement of study ability of learners and applied it to high-grade elementary school students to evaluate the efficiency. The developed e-study skill reflected the practical necessity of students such as various information for studying, environment, time schedule, the way of memorizing and the skill of taking an exam to meet the need of the learners. It applied this program to high-grade elementary school students and found that this e-study skill training program improved the learning achievement of the students. It also found that e-study skill training had long-term effect. It should more specifically define the concept of e-study skill and diversify the contents of study skill training program. Then it will be a useful tool to develop study ability.