Abstract Psychological contract is the bond between employees and organizations, and the importance in practice has made it a popular topic in human resource management. In order to clarify the major trend in psychological contract research, we got 480 literature on psychological contract between 1998 to 2015, using Chinese social science citation index (CSSCI) as data source. Then, the psychological contract knowledge mapping was proposed by using bibliometric co-word analysis and the NodeXL for visualization analysis. Based on the analysis of knowledge mapping, we concluded six research fronts in psychological contract research. The potential research topics were discussed finally.