In this study, we investigated the possibility of extending vase life by using 1-MCP(1-methylcyclopropene)in stock flowers.We recognized that vase life by 1-MCP were promoted, compared to control and STS treated flowers. Ethylene concentrations decreased by the treatment of 1-MCP, whereas 1-Aminocyclopropane-1-carboxylic acid(ACC)synthase and ACC oxidase(ACO)activities were not different among all the treatments clearly.