P53 gene mutation is one of the important causes in tumors. p53‐MDM2 (murine double minute 2) inhibitors can interrupt p53‐dependent gene transcription activity, and inhibit p53‐mediated apoptosis, block p53‐MDM2/MDMx interaction, and significantly reduce DNA formation. In this article, we focused on the synthesis methods about nutlins and other p53 small molecule inhibitors, in order to find potential new structure for novel p53 small molecule inhibitor synthesizing.