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长于清热凉血解毒、敛疮，多用于烫伤、湿疹、疮疡及便血初起
增强收敛止血之力，多用于下焦血热出血证，如便血、崩漏、痔血
内服9–15g，大剂量可用30g；外用适量，研末涂敷。止血多炒炭用，解毒敛疮多生用。
For educational reference only — not medical advice.
地榆富含鞣质（地榆鞣质、没食子酸）与三萜皂苷，药理研究示其收敛止血、抗菌、抗炎及促进创面愈合作用。
Diyu is rich in tannins (sanguiin H-6, gallic acid) and triterpene saponins; pharmacology shows astringent hemostatic, antibacterial, anti-inflammatory and wound-healing effects.
《中国药典》以鞣质含量作为质量评价指标之一；炒炭后鞣质含量变化，止血作用增强。
Chinese Pharmacopoeia uses tannin content as a quality marker; charring modifies tannin content and enhances hemostatic action.
炒炭用于下焦出血与烧伤外敷为经典应用。
Char-fried preparation is classical for lower-burner bleeding and topical burn care.
大面积烧伤外用时须防止鞣质过度吸收致肝损，已有个案报道。
Case reports warn against excessive tannin absorption with hepatotoxicity when applied to large burn surfaces.
This section is provided for academic reference only and does not constitute medical advice.
虚寒性出血、冷痢及下焦虚寒者慎用。大面积烫伤外用时应慎重（含鞣质大量吸收可致肝损害）。
含大量鞣质（约17%），大面积烧伤外用可经创面吸收致中毒性肝炎。虚寒血证忌用。不宜与含铁剂及生物碱类药物同服。
味苦，微寒。主妇人乳痓痛，七伤，带下病，止痛，除恶肉，止汗，疗金疮。
中品
@misc{bencaodian-di-yu,
author = {{Bencaodian Editorial}},
title = {Dì Yú 地榆 (Garden Burnet Root) — Sanguisorbae Radix},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/di-yu},
urldate = {2026-04-09},
note = {CC BY-SA 4.0}
}