The present invention relates to a use of an Urtica cannabina extract for preventing hair loss and/or promoting hair growth, and a composition thereof. The Urtica cannabina extract is obtained by using an organic solvent extraction, a hot water extraction, a compression extraction, a reflux extraction, a digesting extraction, or an ultrasound extraction.COPYRIGHT KIPO 2015본 발명은 울티카 카나비나 (Urtica cannabina) 추출물의 탈모 방지 및/또는 발모 촉진 용도, 및 이의 조성물에 관한 것이다.