Purpose/Significance To propose a grading evaluation method of foreign e-journal resources based on the citation frequency of journals and the cloud model, and to provide a basis for the resource construction of libraries of medical universities and colleges. Method/Process The relative quality of a journal is represented by the total number of citations of each journal published by the authors of a certain institution, the quality representation matrix is established, and the quality cloud of individual journal is generated on this basis. The similarity between the generated quality cloud and the standard journal grade cloud is compared to evaluate the importance level of the journal. Result/Conclusion By using cloud model algorithm and similarity calculation method, the grading results and uncertainty degree of each journal can be obtained, which provide a basis for the resource selection and ordering of libraries of medical universities and colleges.