The invention provides a corn lodging prevention system for a community breeding test field. The system comprises a plurality of backup plates, binding belts, sliding connectors, linkage plates and fixing rods, wherein each backup plate is in a long strip shape, has an arc-shaped cross section and is provided with a sliding groove with two ends closed and several pairs of connecting units arrangedat intervals; the binding belts correspond to the connecting units one by one; at least one sliding connector is arranged on each backup plate, one end of each sliding connector can slide along the corresponding sliding groove, and a series connection hole is formed in the other end of each sliding connector; the linkage plates connect all the sliding connectors at the same position of each backup plate through the series connection holes, and every two fixing rods are arranged at the two ends of each linkage plate respectively and detachably connected with the linkage plate. According to thecorn lodging prevention system for the community breeding test field, lodging of corn can be reduced as much as possible or even avoided, and normal completion of a breeding test can be ensured.