The present invention relates to Enigma (PDLIM7)-Mdm2 interaction and use thereof. More particularly, it may induce an effective apoptosis of cancer cells by inhibition of an Enigma expression or an Enigma activity which induces Mdm2 destabilization and p53 activity; it may assess the prognosis of anti-cancer therapy by determining that Enigma, which is induced by SRF, is overexpressed in cancer tissues with Mdm2; it may screen anti-cancer activity substances by selecting a factor to inhibit specific binding between Enigma and Mdm2. Enigma-Mdm2 interaction and Enigma expression regulation may be utilized usefully for preventing cancers and developing therapeutic methods and anti-cancer agents.