The trade settlement of electronic current transformers have many problems, including complex influencing factors of evaluation indicators, and it is difficult to make quantitative analysis for subjective attitude. In this paper, an risk assessment evaluation method of electricity for trade settlement of electronic current transformers based on grey relevance degree algorithm is presented. Firstly, it mainly analyzes the influence factors of trade settlement for electronic current transformers. A comprehensive evaluation indexes system is proposed from the fourth aspect of the accuracy factor, operational stability factor, environment factor and human factor. Then, each first-level indicator is divided into some quantitative or qualitative secondary indicators and the ideal value of each secondary indicator is presented. Secondly, it applies grey relevance degree algorithm to analyze the comprehensive evaluation index system of trade settlement risk of electronic current transformers, and makes the evaluation result more objective and accurate. It can provide the reference for operation and maintenance of electronic current transformers. Finally, a case of equipment of JiangSu province validates the rationality and effectiveness of the proposed method in this paper.