This main purpose of this research is to develop a set of the evaluation system which combines several technologies for e-learning websites and on-line multimedia, such as website software builder, network technology, multimedia Flash software, database, test theory, etc. The ability indicators of this evaluation system is based on the ability indicators of information education of Ministry of Education. After taught contents by using the website, students would take both the paper exams and the on-line multimedia tests. The differences between the results of both exams would be analyzed. According to the results, the researcher can not only find out the relatedness between students’ scores and on-line studying but also understand whether tudents reach the educational ability indicators of information or not. The researcher can also probe into the attitudes of teachers and students toward the on-line multimedia assessing system. This research is based on the unit of “An Introduction to Computers for the third graders”. The concrete research purposes are: 1. To set up an online multimedia assessing system on a educational website. 2. To compare the difference and efficiency between traditional paper tests and online multimedia assessing system. 3. To carry out a survey among teachers and students in order to know their attitudes toward the online multimedia assessing system and to investigate whether students have reached the educational ability indicators of information or not. The research tool includes that the researcher who combines the ability indicators of information education, studies ' e-learning websites ' , ' evaluation system for on-line multimedia ' , ' the questionnaire investigation of student's computer commenting amount ' of the construction by oneself , and carries on statistical analysis of the income materials. The whole results of the study are: 1. Evaluation system for e-learning websites and on-line multimedia can move up the learning interest of the students effectively. 2. Evaluation system for e-learning websites and on-line multimedia can help the teachers to understand the learning effect of the students. 3. Evaluation system for e-learning websites and on-line multimedia is better than the traditional writing test in teaching.