Recommendation algorithm has a good application prospect in e-commerce systems, has been paid more and more attention and recognition, and has become a research hotspot in the field of electronic commerce. Based on the introduction of the current mainstream recommendation algorithm, in combination with the practical application requirements of e-commerce, multi-objective composite evaluation and optimization of recommendation algorithm is proposed. Based on the tuniu.com data, comparing with other recommendation algorithm, this paper verifies the effectiveness of the algorithm, and provides a new way and method of research of composite recommendation system.