Disclosed is a genome stability enhancer that contains, as an active ingredient, at least one selected from the group consisting of enzymatically degraded royal jelly, gnetum or an extract thereof, and gnetin C.本發明係提供一種基因體穩定性增強劑,其係含有選自酵素分解蜂王漿、買麻藤或其萃取物、及Gnetin C所成群中至少1種作為有效成分。