Wiki technology is one of the hottest research domains nowadays. The idea of integrating Wiki with digital library brings us new way to improve the quality of information retrieval and service in digital library. This paper presents a new retrieval model based on Wiki technology in literature retrieval system. Experiments designed show that the recall and precision of the new system are much better than the traditional ones. But the method also has some disadvantages, for example it does not change computer's communication mode essentially. Our work will deal with these problems mentioned above to provide better service in the digital library in the future.