With the development of Internet technology, online education colleges and companies have developed a WWW-based distance education system. The traditional examinations are moving towards online exams based on Internet. With the development of computer technology and the increasing popularity of computers, online examinations are gradually becoming matured. Traditional test methods have been unable to meet current test demands. All aspects of traditional test can be reduced to one or two links by Online Examination, greatly reducing the workload of teachers. This paper discusses the framework of the system, jsp technology and its working principle. Due to the shortcomings of traditional test methods, the objective, impartial, scientific and rational Online Examination system has a large reference value.