Recyclable vena cava filter and filter system

The utility model relates to a recoverable vena cava filter and a filter system, the recoverable vena cava filter comprises a recovery hook, a support part and a filter part, the support part comprises a plurality of support rods and a support ring, one end part of each support rod is connected with the recovery hook, and the support ring is connected with the plurality of support rods; wherein the filtering part comprises a plurality of filtering rods and filtering rings, one end parts of the filtering rods are connected with the recycling hook, the filtering rods are positioned in the supporting part, the filtering rings are connected with the filtering rods, and the supporting ring and the filtering rings are made of degradable materials. Supporting force is provided through the supporting part, and a multi-layer filtering structure is formed through the supporting part and the filtering part, so that the thrombus filtering frequency is increased, the thrombus filtering efficiency is improved, and the risk