The invention discloses a unique Chinese 
medicinal herb preparation special for treating 
canker sore (aphthous 
stomatitis). The vital movement of a person is the synergic reaction of viscera functions, and viscera have different functions and depend on and 
restrict mutually; and the viscera are applied in different ways and cooperate with one another. According to 
syndrome differentiation treatment of viscera diseases, symptoms on lips, tongue and 
oral cavity are caused by 
spleen qi stagnation of a patient suffering from aphthous 
stomatitis, wind-heat, anxious heat, deficiency-cold in middle-jiao, deficiency-fire in lower-jiao and channel and collateral progression. In the preparation, 
coptis root, figwort, dwarf lilyturf root, common 
anemarrhena, indigowoad leaf, 
isatis root and Chinese wolfberry root-
bark are used for clearing away heat, purging pathogenic fire, reducing fever, detoxifying, nourishing yin, cooling blood, removing ecchymoses, eliminating stagnation, relieving 
sore throat and treating deficiency-heat; baikal skullcap root, amur corktree 
bark, natural 
indigo, Chinese angelica, dangshen, large-head atractylodes 
rhizome, indian buead and tree peony 
bark are used for clearing away heat, cooling blood, eliminating dampness, normalizing the function of the 
stomach and 
spleen, clearing dampness, promoting 
diuresis, purging pathogenic fire, detoxifying, invigorating the 
spleen, replenishing the 
stomach, enriching the blood, invigorating 
blood circulation and eliminating stasis; and unprocessed fructus 
gardenia, 
gypsum, unprocessed 
rehmannia, processed 
rehmannia, glossy 
privet fruit, spina date seed, shelled cedar seed, 
skunk bugbane and dragon bone are used for clearing away heat, purging pathogenic fire, relieving restlessness, 
quenching thirst, eliminating wetness, nourishing yin, promoting the 
secretion of 
saliva or 
body fluid, cooling blood, enriching the blood, nourish yin and 
kidney, converging, inducing astringency, subduing the liver yang, releasing 
mental stress and nourishing the heart to calm the mind till the aphthous 
stomatitis is cured. The preparation does not contain any chemical ingredient which is harmful to human bodies, has a small 
side effect, a remarkable 
curative effect and low production cost, and is easy to take.