Abstract: Some primary factors of mobile commerce trade risk are analyzed and an index system of evaluation of mobile commerce trade risk is established by considering some aspects. Based on Dempster-Shafer’ s evidence theory, an evaluation used to evaluate the risk of mobile commerce trade is proposed. The evidence fusion is adopted to fuse the uncertain multi-index multi-degree assessment problem involving the risk of mobile commerce trade, the risk evaluation problem is converted into a definite single-index evaluation problem. Finally, The case analysis shows that the method is efficient and practical for the evaluation of mobile commerce trade risk.