The invention relates to a rotary table planting bracket for watermelons. Mature watermelon varieties such as Xinhongbao are very large and cannot be planted in a suspension manner. One surface of a watermelon continuously sinks into soil in the growth period, is not irradiated by sunlight and is simultaneously inevitably suffered from adverse conditions such as water logging and plant diseases and insect pests. The rotary table planting bracket is of a plastic integrated structure formed by a bracket and a matrix (1), wherein a group of uniformly distributed square vent holes (2) with the side lengths of 2mm are formed in the matrix, the matrix is of a rotary table-shaped structure with low middle part and high periphery, the left and right side surfaces of the matrix are circular arcs with the central angles of 17 degrees, and the front and rear side surface of the circular arcs with the central angles of 33.88 degrees. The rotary table planting bracket is applied to the rotary tableplantation of the watermelons.