This paper studies the strategy of automatic extracting and assembling papers system, and put emphasis on the construction of test-question storeroom and the strategy of extracting and assembling subject. It the same time brings forward dynamic algorithms of configure assembling  parameters and model of random assembling subject. This paper also describes the main function of test-question storeroom subsystem, extracting and assembling papers subsystem and compiling papers subsystem in detail, as well as the corresponding interface based on Virtual C++ 6.0.