The present invention is characterized by an environmentally friendly plant cultivating method sterilizing a nutrient broth or water used in a plant cultivating apparatus using low temperature plasma and not using a disinfectant which is an agricultural pesticide. The plant cultivating apparatus according to the present invention sterilizes the nutrient broth or water for a cultivated plant not to be polluted to prevent the excess use of an agricultural pesticide (disinfectant) and the damage caused by the use and to provide an environmentally friendly plant cultivating method.식물 재배기에 사용되는 영양액 또는 물을 저온 플라즈마를 사용하여 살균처리 함으로써 농약인 살균제를 사용하지 않는 자연 친화적인 식물 재배방식임을 특징으로 한다.