Surrounding barrier preventing phyllotreta striolata fabricius from harming pakchoi cabbages

The utility model discloses a surrounding barrier preventing phyllotreta striolata fabricius from harming pakchoi cabbages. The surrounding barrier is composed of a supporting frame and a surrounding film, the supporting frame is set up along the periphery of a vegetable garden, the surrounding film is bound on the supporting frame, and a closed annular separation wall is formed in a field. The surrounding barrier can effectively prevent phyllotreta striolata fabricius from transferring to and harming pakchoi cabbages in the surrounding barrier. By means of the surrounding barrier, pesticides are avoided, production and income are increased, and the surrounding barrier is safe, friendly to environment, simple and easy to achieve, and easy to popularize.