Wang, female, 14 years old. Suffering from meningitis, after being cured by Western medicine, he often spits at the mouth, especially when eating, and is accompanied by irritable temper, irritability, pale red tongue, thin white coating, and flat and irregular pulse. According to "Treatise on Febrile Diseases": "After a serious illness, the patient will salivate and will not be able to hold it for a long time. It should be warmed with pills, and Lizhong Pills should be used." It means that Lizhong Pills are used to treat the disease, but the effect is not obvious. According to the meaning of "Jingui Yaolue" that "there is coldness in the upper Jiao, the mouth will be drooling", Linggui Shugan Decoction was given to treat it, but it still had no effect. After trying to treat it with licorice and ginger decoction, since the above warming tonic was ineffective, he treated the lung disease with deficiency heat and used Ophiopogon japonicus decoction.

Ophiopogon japonicus, Codonopsis pilosula, Pinellia pinellia, Zhicao, jujube, japonica rice, decocted in water, 3 doses.

After taking 3 doses, the initial effect was seen and the drooling at the mouth was reduced. The dosage of Pinellia ternata and Ophiopogon japonicus was aggravated above, 1 dose per day, and more than 20 doses in a row, and the condition was stable.