The aim of this study was to develop a Mobile Reading Assistance System Based on Chinese Words for students in elementary schools. This paper presents a system which is called Reading Assistance for the elementary school students to learn anytime and anywhere by using personal mobile devices (PDA) and the Wireless Network. In this system, instructors would be required to upload the text content to the system and instructors can view the learning record of students. On the other hand, learner can read the text content and learn Chinese words by using this system. To sum up, the characters of this system are easy reading, easy learning, easy conduct, and high supportive which support for student Assistance of Reading. In the future, researchers will use tests to assess the system.