The utility model relates to an agricultural device, concretely relates to prevent hybrid isolating device of pseudo -ginseng different cultivars. Including bracing piece (1), outer screen panel (2), connecting rod (3), adjust pole (4), interior screen panel (5), bracing piece (1) connects to form the frame with connecting rod (3), frame surfaces is fixed in in outer screen panel (2), adjusts pole (4) and connecting rod (3) swing joint, and adjusts pole (4) and can stretch out and draw back, interior screen panel (5) are installed to regulation pole (4) lower extreme, interior screen panel (5) lower extreme has an opening, outer screen panel (2) be 30~40 meshes, interior screen panel be 60~70 meshes. Adopt the utility model discloses can keep apart the plant, prevent the propagation of different planting flower powder to keep apart the effect is greatly improved, do not influence the illumination of plant and the circulation of inside air, do benefit to vegetation, the utility model discloses lay better firm, the better convenience of use, can operate the plant at any time.