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辛凉解表，除烦透邪，为银翘散所用
辛温解表，作调味品而非正品入药
煎服6–12g。根据加工不同性味稍异：桑叶、青蒿同制者偏凉，用于风热与温病；麻黄、苏叶同制者偏温，用于风寒；本条目以吴鞠通银翘散所用之辛凉制品为准。
For educational reference only — not medical advice.
淡豆豉为大豆经桑叶、青蒿煎汁发酵加工品，主含大豆异黄酮、皂苷及发酵生成的游离氨基酸与B族维生素，药理示其解热、轻度发汗与助消化作用。
Dan Dou Chi is soybean fermented with mulberry leaf and Artemisia decoction; it contains soy isoflavones, saponins and fermentation amino acids / B-vitamins; pharmacology shows antipyretic, mild diaphoretic and digestive effects.
《中国药典》规定淡豆豉以大豆经桑叶、青蒿汁发酵而成，所含大豆异黄酮等作为质量参考。
Chinese Pharmacopoeia specifies Dan Dou Chi as soybean fermented with mulberry leaf and Artemisia decoction, with soy isoflavones as quality reference constituents.
Bensky 记载淡豆豉既可辛凉解表，又能治热病后虚烦，为栀子豉汤之臣药。
Bensky records Dan Dou Chi as an acrid-cool exterior-releaser and treatment for post-febrile vexation — minister herb of Zhi Zi Chi Tang.
This section is provided for academic reference only and does not constitute medical advice.
胃虚易呕者慎用。单品力薄，多与金银花、连翘、栀子等配伍。孕妇慎用大剂量。
本品以大豆 Glycine max 发酵加工而成，入药须用依《中国药典》之发酵工艺制成的淡豆豉，不可用日常食用的咸豆豉或纳豆代替。辛凉或辛温品须依处方需要选用。
发汗后，水药不得入口为逆；若更发汗，必吐下不止。发汗吐下后，虚烦不得眠；若剧者，必反复颠倒，心中懊憹，栀子豉汤主之。
辨太阳病脉证并治下
@misc{bencaodian-dan-dou-chi,
author = {{Bencaodian Editorial}},
title = {Dàn Dòu Chǐ 淡豆豉 (Fermented Soybean) — Sojae Semen Praeparatum},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/dan-dou-chi},
urldate = {2026-04-09},
note = {CC BY-SA 4.0}
}