According to the present invention, a vinyl support for a vinyl greenhouse has a frame insertion part to be installed on a frame of a vinyl greenhouse, and has a vinyl supporting part to support a vinyl sheet rolled on the outside of the frame. The vinyl support for a vinyl greenhouse comprises a fastening member installation part formed to be extended on both edges of an opening of the frame insertion part and a fastening member installed to surround the outside of the fastening member installation part and reducing the distance between both sides of the opening of the frame insertion part. Furthermore, grooves having planes therein are formed on the outer surface of the fastening member installation part, and separation-preventing extension pieces are formed to protrude on both sides of the end of the fastening member installation part to prevent separation of the fastening member. The fastening member has an insertion hole into which the fastening member installation part is inserted, and plane parts corresponding to the grooves of the fastening member installation part are formed in parallel on the inner surface of the insertion hole. Also, guide parts are formed separately between the plane parts on the inner surface of the insertion hole, wherein the distance between the two plane parts formed on the inner surface of the insertion hole is smaller than the distance between the two guide parts. Therefore, the vinyl support of the present invention can reduce the diameter of the frame insertion part by inserting the fastening member installation part into the insertion hole of the fastening member and rotating the fastening member. Accordingly, the vinyl support can fasten the opening of the frame insertion part of the vinyl support by a simple structure, thereby having an effect in which the vinyl support can be quickly and firmly coupled and fixed to the frame of the vinyl greenhouse.COPYRIGHT KIPO 2016본 발명에 의한 비닐하우스용 비닐받침대는 골조삽입부가 형성되어 비닐하우스의 골조에 설치되고 비닐지지부가 형
