The invention discloses a 
traditional Chinese medicine for treating furuncle of the external 
auditory canal and a preparation method thereof, which is characterized in that it consists of the following ingredients in parts by weight: 4 grams of rose, 6 grams of peilan, 12 grams of raw land, 12 grams of Radix 
Ophiopogon japonicus, 8 grams of 
Sophora japonica,  10 grams of incense, 7 grams of bamboo, 11 grams of 
pinellia koji, 8 grams of 
tangerine peel, 15 grams of lentils, 15 grams of poria cocos, 10 grams of 
talc, and 8 grams of fennel.  Weigh the medicinal materials according to the formula, mix the weighed medicinal materials evenly, then wash and 
chop the medicinal materials, dry them until the 
water content is less than 1%, then 
grind them, 
sieve them with an 80-mesh 
sieve, and put the obtained mixture into  After 
steaming in a cotton bag for 40 minutes on 
high heat, 
steaming on low heat for 20 minutes, filtering with gauze to obtain the filtrate, the 
traditional Chinese medicine for treating boils in the external 
auditory canal disclosed by the invention has the functions of aromatizing dampness, regulating qi and relieving stagnation, clearing away heat and cooling blood, and nourishing yin.  It has the effects of promoting 
body fluid, relieving heat, invigorating the 
spleen and calming the heart, and has a good 
therapeutic effect on furuncles in the external 
auditory canal, with quick onset and no recurrence.