Plant protection bag

The utility model discloses a plant protection bag, and relates to the field of plant protection bags. The device comprises a protective cover, three limiting sleeves are arranged on the inner side wall of the protective cover, the top end of each limiting sleeve is arranged in a sealed mode, and the interior of each limiting sleeve is connected with an auxiliary supporting rod; the protective cover is provided with a vertical opening, and the opening is connected with a zipper; each limiting sleeve is connected with the protective cover in an adhesive mode, and the radius of each limiting sleeve is equal to the diameter of the corresponding auxiliary supporting rod. Each auxiliary supporting rod comprises a fixed end and a movable end, and the fixed end and the movable end are arranged in an inner-outer double-layer sliding telescopic mode. The supporting rings, the auxiliary supporting rods and the tightening ropes are additionally arranged on the protection cover to be matched, so that the whole protection