With the advent of the era of big data, the situation of password leakage occurs, data security has become an increasingly concerned issue. Using springmvc+spring+mybatis framework technology, this paper expounds in detail the application of added salt BCrypt algorithm in e-commerce security module by means of model analysis, database table design, and timing diagram logic jump, which effectively solves the drawbacks of MD5 encryption algorithm, and greatly improves the security of information.