1. Scutellaria baicalensis Georgi and Poria cocos are contraindicated: people with yin deficiency of liver and kidney, excessive toxicity of cold, dampness and heat, and people with dry throat cannot take Scutellaria baicalensis Georgi and Poria cocos to soak in water. This group can't be conditioned, but it is very easy to aggravate the condition.

2. The soaking method of Scutellaria baicalensis Georgi and Poria cocos in water: Scutellaria baicalensis Georgi 10g, Coicis Semen 15g, and proper amount of water. Wash Scutellaria baicalensis Georgi and Coicis Semen with cold water, wrap them with emery cloth, put them in a stone pot, soak them in clear water for 30 minutes, bring them to a boil with high fire, then simmer 1 hour and let them cool.