The purpose of this project was to develop Computer Assisted Instruction (CAI) Excretory System and Digestive System for to promote junior high school students to learn and understand the system of human body, episode excretory system and the digestive system is more. The population are junior high school students. This project was created by using Adobe Flash Professional CS6 to help the created image and movement of the character, lessons and practice. The results showed that students in junior high school learned and understand lessons more easily and the quality of learning of junior high school students better and reduction documents budget.