The invention relates to a nursery stock supporting mechanism. The nursery stock supporting mechanism comprises a fixing set, a supporting plate set and a supporting set, the fixing set comprises a vertical fixing rod and two connecting parts arranged at the two sides of the lower end of the fixing rod, the connecting parts are of annular structures, and the two connecting parts are connected to form an 8-shaped structure; the supporting plate set comprises a supporting plate arranged at the upper end of the fixing rod, and the supporting plate is of an arc structure of which an opening is upward; the supporting set comprises a first supporting set body and a second supporting set body which are arranged at the two sides of the fixing rod, the first supporting set body is arranged below the second supporting set body and comprises two first supporting rods which are arranged at the left side and the right side of the fixed rod respectively, the upper end of the first supporting rod ismovably connected with the fixing rod, the second supporting set body comprises two second supporting rods which are arranged at the left side and the right side of the fixed rod respectively, the upper end of each second supporting rod is connected with one end of the lower end face of the supporting plate, and the lower end of each second supporting rod is fixedly connected with the side of thefixing rod. The nursery stock supporting mechanism has the advantages of being simple in structure and improving the stability and firmness.