It was discovered in the qualitative study that the overseas students of western medicine( WM) have applied the comparative thinking in learning Chinese medicine,focusing on the comparison between TCM and WM and between TCM and the traditional medicines of the origin countries. Hence,in the paper,the objective existence of the comparative thinking was described in the overseas students of WM in learning TCM and the internal reasons were analyzed on the use of comparative thinking. The impacts of the comparative thinking were explained in lear...