Abstract: In our report, the general characteristics of search engine technology and the implementation process were studied, and the subject improved reptile algorithm were systematic analyzed and compared, a better search engine to meet the requirements of different users were designed, and which has the scientific nature, highly effective, the usability, easy operational and so on merits. This search engine was used to query on a number of large sites and the comparing results with general search engine indicated that the data recall and precision rates of it were higher than that of general search engine, which has the high value for promotion.