The invention discloses a plaster for preventing and treating hemorrhoid. The plaster includes an inner layer, a 
traditional Chinese medicine layer, an outer layer and an 
adhesive layer; the 
traditional Chinese medicine layer is prepared a 
traditional Chinese medicine composition comprising the following components in parts by weight: 20 to 40 parts of cherokee rose root, 10 to 25 parts of Radix 
Codonopsis, 15 to 25 parts of Chinese angelica, 10 to 20 parts of 
Andrographis paniculata Nees, 10 to 25 parts of 
zanthoxylum dissitum, 10 to 20 parts of Chinese 
mahonia stem, 10 to 15 parts of 
spatholobus stem, and 8 to 15 parts of philippine 
flemingia root, the inner layer is prepared by the dregs of the traditional Chinese 
medicine composition; and further, a traditional Chinese 
medicine such asAmpelopsis 
japonica or 
dandelion may be compounded. The plaster is compounded according to the theory of compatibility of traditional Chinese medicines, and is compounded by aiming at the treatment of hemorrhoid, especially postpartum hemorrhoid, and the preventive and 
therapeutic effect on hemorrhoid is remarkable; the inner layer is prepared by the dregs, and the remaining medicinal ingredientson the dregs can be fully utilized; in addition, the product has no toxic and side effects, high safety, no 
skin stimulation, and easy usage, can be directly attached to the underpants, and has goodapplication prospects.