NOVELTY - Preparation moth-proof paper box, by (a) weighing sesame stalk, mint leaf stalk, Chrysanthemum leaves stalk, fennel leaves stalk and lime powder, cutting the plant material, mixing uniformly and drying, (b) crushing the dried plant material and mixing uniformly, (c) selecting good air permeability or fine nonwoven fabric gauze or bag, soaking in aqueous ethanol solution, and drying, and preparing plastic rectangular box, and (d) treating the bag using the pesticidal composition, packing the bag into the prepared box to obtain the product.    USE - The method is useful for preparation moth-proof paper box (claimed).    ADVANTAGE - The moth-proof paper box is prepared by simple method, cost-effective, convenient to use, and environment-friendly, and causes no side effects, thus is safe. The moth-proof paper box has moisture-proof long lasting for 1-2 years, and enables to prevent fading of paper, and replace the compositions in cartridge once in 1-2 years.    DETAILED DESCRIPTION - Preparation moth-proof paper box, involves (a) weighing 20-30 wt.% sesame stalk, 10-20 wt.% mint leaf stalk, 5-10 wt.% Chrysanthemum leaves stalk, 10-20 wt.% fennel leaves stalk and 30-50 wt.% lime powder, cutting the plant material to 1-10 mm strip or sheet, mixing uniformly and drying the mixture under shade, until the moisture content reaches 12% or less, (b) crushing the dried plant material using crusher to a diameter of 1 mm or less to obtain plant powder, adding the plant powder and lime powder in a container, mixing uniformly to obtain pesticidal composition, (c) selecting good air permeability or fine nonwoven fabric gauze or bag, soaking in 75% aqueous ethanol solution for 20-30 minutes, and drying the bag or gauze, where the nonwoven fabric gauze length is 20 cm, width 10 cm, and thickness is 3 cm, and preparing plastic rectangular box with corresponding dimensions of nonwoven fabric gauze or bag, where the box has six faces and dense holes, and (d) treating the bag using the pesticidal composition, packing the bag into the prepared box to obtain the product.