（《证类》）
【气味】至冷。
【主治】涂汤火疮（《证类》）。疗妊娠热病，取敷心下及丹田，可护胎气（时珍）。
【附方】新五。
头风热痛∶井底泥和大黄、芒硝末，敷之。（《千金方》）
胎衣不下∶井底泥，以鸡子大，井华水服，即下。（《集玄方》）
卧忽不寤∶勿以火照，但痛啮其踵及足拇趾甲际，而多唾其面，以井底泥涂其目，令人
垂头入井中，呼其姓名，便苏也。（《肘后方》）
小儿热疖∶井底泥敷其四围。（《谈野翁方》）
蜈蚣螫人∶井底泥频敷之。（《千金方》）
（《纲目》）
【释名】乌叠泥（《纲目》）、孩儿茶。
时珍曰∶乌爹，或作乌丁，皆番语，无正字。
【集解】时珍曰∶乌爹泥，出南番爪哇、暹罗、老挝诸国，今云南等地造之。云是细茶
末入竹筒中，坚塞两头，埋污泥沟中，日久取出，捣汁熬制而成。其块小而润泽者，为上；
块大而焦枯者，次之。
【气味】苦、涩，平，无毒。
【主治】清上膈热，化痰生津。涂金疮、一切诸疮，生肌定痛，止血收湿（时珍）。
【附方】新八。
鼻渊流水∶孩儿茶末，吹之，良。（《本草权度》）
牙疳口疮∶孩儿茶、硼砂等分。为末搽之。《积德堂方》∶治走马牙疳，用孩儿茶、雄黄、
贝母等分。为末，米泔漱净搽之。
下疳阴疮∶外科用孩儿茶末，米泔洗净，敷之神效。或加胡黄连等分。《纂奇方》∶孩儿
茶一钱，珍珠一分，片脑半分，为末敷之。唐氏用孩儿茶一钱，轻粉一分，片脑一字。为末
搽之。
痔疮肿痛∶孩儿茶、麝香为末，唾津调敷。（孙氏《集效方》）
脱肛气热∶孩儿茶二分，熊胆五分，片脑一分。为末，人乳搽肛上，热汁自下而肛收也。
亦治痔疮。（董炳方）
(From *Zhenglei Bencao*)
[Properties and Flavors] Extremely cold in nature.
[Indications] Apply to burns and scalds (*Zhenglei Bencao*). Treat febrile diseases during pregnancy by applying to the epigastrium and Dantian (Lower Abdomen) to protect fetal Qi (Li Shizhen).
[Additional Formulas] Five new formulas.
Head wind with heat and pain: Mix well-bottom mud with powdered Rhizoma Polygoni Cuspidati (Dahuang, 大黄) and Natrii Sulfas (Mangxiao, 芒硝), and apply externally. (*Qianjin Fang*)
Retained placenta: Take well-bottom mud the size of a chicken egg, swallow with water drawn from a well at dawn, and the placenta will be expelled. (*Jixuan Fang*)
Sudden coma/unconsciousness: Do not use fire to illuminate. Instead, bite firmly at the heel and the edge of the big toenail, spit frequently onto the face, apply well-bottom mud to the eyes, lower the head into the well, call out the person's name, and they will regain consciousness. (*Zhouhou Beiji Fang*)
Pediatric hot furuncle: Apply well-bottom mud around the periphery of the boil. (*Tanyeweng Fang*)
Centipede bite: Frequently apply well-bottom mud to the wound. (*Qianjin Fang*)
(From *Bencao Gangmu*)
[Names] Wudie Ni (*Bencao Gangmu*), Hai'er Cha (Child's Tea).
Li Shizhen states: "Wudie" is sometimes written as "Wuding"; both are transliterations from foreign languages without standard Chinese characters.
[Collection and Explanation] Li Shizhen states: Wudie Ni originates from foreign lands such as Java, Siam, and Laos, and is now also produced in Yunnan and other regions. It is said to be made by packing fine tea powder into bamboo tubes, sealing both ends tightly, burying them in muddy ditches for a long time, then retrieving them, crushing into juice, and boiling/concentrating. Those that are small and moist/lustrous are of superior quality; those that are large and scorched/dry are inferior.
[Properties and Flavors] Bitter, astringent, neutral in temperature, non-toxic.
[Indications] Clears heat from the upper jiao (chest and diaphragm), transforms phlegm, and generates fluids. Applied to traumatic wounds and all types of sores/ulcers, it promotes tissue regeneration, relieves pain, stops bleeding, and absorbs dampness (Li Shizhen).
[Additional Formulas] Eight new formulas.
Ozena (chronic rhinitis with foul discharge): Blow powdered Hai'er Cha (Child's Tea) into the nasal cavity; effective. (*Bencao Quandu*)
Gum gangrene and mouth ulcers: Equal parts Hai'er Cha (Child's Tea) and Borax. Grind into powder and apply topically. *Jidetang Fang*: For treating rapid-onset gum gangrene (Zouma Ya Gan), use equal parts Hai'er Cha (Child's Tea), Realgar (Xionghuang, 雄黄), and Fritillariae Bulbus (Beimu, 贝母). Grind into powder, rinse the mouth clean with rice wash water, and apply.
Chancres and genital ulcers: In surgery, use Hai'er Cha (Child's Tea) powder, clean the area with rice wash water, and apply for miraculous effect. Alternatively, add equal parts Radix Picrorhizae Scrophulariiflorae (Huhuanglian, 胡黄连). *Zuanqi Fang*: Hai'er Cha (Child's Tea) 1 qian, Pearl 1 fen, Borneolum Syntheticum (Pian Nao, 片脑) 0.5 fen, grind into powder and apply. Tang's method: Hai'er Cha (Child's Tea) 1 qian, Calomelas (Qingfen, 轻粉) 1 fen, Borneolum Syntheticum (Pian Nao, 片脑) 1 zi. Grind into powder and apply.
Hemorrhoids with swelling and pain: Hai'er Cha (Child's Tea) and Moschus (Shexiang, 麝香) ground into powder, mixed with saliva, and applied topically. (Sun's *Jixiao Fang*)
Rectal prolapse with qi-heat: Hai'er Cha (Child's Tea) 2 fen, Bear Gallbladder (Xiongdan, 熊胆) 5 fen, Borneolum Syntheticum (Pian Nao, 片脑) 1 fen. Grind into powder, mix with human milk, and apply to the upper anus; the heat fluid will drain downward, and the anus will retract. Also treats hemorrhoids. (Dong Bing's formula)