A lot of computer test system adopts objective topic given points by the computer, and the subjective topic is by the teachers review to points, giving teachers a lot of extra work. A targeted intelligence marking scheme is put forward in this paper, and connecting with the actual situation, designed and simulated the implements an intelligent system. With the aid of certain criteria, the subjective topic grading and the analysis of the examinee answers, are reasonable subjective item grading, shorting the testing process, saving marking time, without subjective factors in the marking. So that student's result can objectively real reaction students have mastered the knowledge and teachers' teaching.