The present invention relates to a novel strain having hair loss preventing, hair growth promoting, or sexual function improving capabilities, and to a composition including the same. The strain is Brevibacillus reuszeri Ceb-ch-003 (KCCM11911P). The strain has hair loss preventing, hair growth promoting, erectile dysfunction alleviating, or cholesterol lowering functions.본 발명은 탈모 예방, 발모 촉진 또는 성기능 개선능이 있는 신규한 균주 및 이를 포함하는 조성물에 관한 것이다.