The paper researches the co-authorship situation in the field of foreign medical ethics through the social network analysis method, taking 9 foreign core journals of medical ethics included in the Journal Citation Report as the data source,it extracts and sorts out the information through BICOMB and UCINET software to generate the co-occurrence matrix of the author and draw the map, reveals the overall structural features and co-authorship situation of the co-authorship network in the field of foreign medical ethics.