The purpose of the present invention is to provide an MMP-1 production inhibitor. An MMP-1 production inhibitor containing, as an active ingredient, an extract of at least one plant selected from the group consisting of ashwagandha (Withania somnifera), passion flower (Passiflora incarnata) and locust tree (Robinia pseudoacacia).本發明之目的為提供MMP-1產生之抑制劑。本發明之解決手段為含有選自南非醉茄、西番蓮、及刺槐所組成群組之1或2種以上的植物萃取物作為有效成分之MMP-1產生抑制劑。