The invention discloses a black plaster for treating 
hyperplasia of mammary glands and a method for preparing the same. The black plaster is mainly used for treating the 
hyperplasia of the mammary glands, lobules of mammary glands, 
breast lumps, 
breast swelling pain and the like, and is prepared from the following raw materials and 
sesame oil, wherein the main raw materials in weight portion are: 10 to 15 portions of angelica, 6 to 15 portions of radix paeoniae rubra, 6 to 15 portions of rhizoma ligustici wallichii, 6 to 15 portions of radix curcumae, 10 to 15 portions of roasted rhizoma 
corydalis, 10 to 30 portions of radix salviae miltiorrhizae, 6 to 10 portions of safflower, 3 to 10 portions of boninrousette, 6 to 10 portions of 
caladium, 10 to 30 portions of bugleweed, 6 to 15 portions of rhizoma cyperi, 6 to 15 portions of 
radix bupleuri, 10 to 15 portions of radix linderae, 9 to 15 portions of immature tangerine, 6 to 15 portions of 
hovenia dulcis, 6 to 15 portions of pericarpium trichosanthis, 10 to 30 portions of 
oyster, 6 to 10 portions of roasted carapax amydae, 3 to 10 portions of 
brassica alba boiss, 6 to 10 portions of 
semen vaccariae, 6 to 10 portions of rose, 3 to 10 portions of roasted 
frankincense, 3 to 10 portions of roasted 
myrrh, 6 to 10 portions of white batryticated silkworm, 1 to 3 portions of 
centipede and the like.