Aiming at the problem of power battery suppliers evaluation and selection from the perspective of risk, a two-stage risk assessment and selection model was constructed based on Trust Risk and Improved TOPSIS (TRIT method) focusing on lithium power battery suppliers to achieve the goal of improving the reliability of evaluation results and decision-making efficiency. Firstly, a preliminary screening model of suppliers evaluation under the influence of trust risk is established. Secondly, experts with high consensus degree preference are organized to form an internal low-risk decision-making team. Thirdly, a risk evaluation indexes system containing reverse logistics capability risk is established and the indexes weights are determined by fuzzy AHP method. Then, the improved TOP-SIS method is introduced in the secondary screening to evaluate the risk status of different suppliers, and the ranking results of the risk size of different suppliers are obtained, so as to assist enterprises to choose cooperation partners more scientifically and efficiently. Finally, taking the risk evaluation and selection of lithium battery suppliers of a new energy vehicle manufacturer as an example, the final selection results are analyzed and verified the feasibility and effectiveness of the proposed method.