The present invention relates to an environment-friendly enhancer of cut flowers respectively containing 89.0 to 95.0 wt% of a nano-silver solution, 3.0 to 5.0 wt% of sucrose, 0.5 to 1 wt% of ZnSO_4 and 1 to 5 wt% of 3-phenylpropionic acid.COPYRIGHT KIPO 2018본 발명은 친환경 절화보존제에 관한 것으로, 은나노 수용액 89.0 내지 95.0 w%, sucrose 3.0 내지 5.0 w%, ZnSO4 0.5 내지 1 w%, 3-Phenylpropionic acid 1 내지 5 w%를 각각 함유하는 것을 특징으로 한다.