Sectioned degradable plugging device

The invention provides a sectioned degradable plugging device. The sectioned degradable plugging device comprises a net-shaped support. The net-shaped support is formed by knitting degradable yarns and comprises an upper disc face, a lower disc face and a waist for connecting the upper disc face with the lower disc face. An upper membrane arranged on the upper disc face in a covering mode is sewed to the upper disc face. A lower membrane arranged on the lower disc face in a covering mode is sewed to the lower disc face. A flow blocking membrane for transversely blocking the waist is arranged on the waist. The upper membrane, the lower membrane and the flow blocking membrane are made of degradable materials. An inner core connecting rod is arranged in the middle of the lower disc face and connected with the lower membrane into a whole. A clamping structure is arranged in the middle of the upper disc face, and the inner core connecting rod can penetrate through the flow blocking membrane to be clamped on the clamping structure. According to the sectioned degradable plugging device, the structure is used for polymer-class degradable plugging devices, and the problems, caused by the poor mechanical properties of polymer materials, in the rebound resilience, the fixing stability and the like are solved through innovation in the structure aspect.