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舌苔灰黑而润滑多津，苔质腻或水滑，舌体多淡胖。
Coating grayish-black, slippery with abundant fluids, greasy or water-slick; tongue body typically pale and swollen.
主阳虚寒盛；肾阳衰微，寒水上泛，阴寒极盛之象。
Indicates yang deficiency with exuberant cold; declining kidney yang allows cold water to rise—a sign of extreme internal cold.
@misc{bencaodian-black-wet,
author = {{Bencaodian Editorial}},
title = {shé tāi hēi rùn 舌苔黑润 (Moist Black Coating)},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/tongue/black-wet},
urldate = {2026-04-09},
note = {CC BY-SA 4.0}
}