The exact dosage of Coptis chinensis and Perilla frutescens in water is to be determined according to the condition, in general, Coptis chinensis is recommended to be 2-5 grams per day for adults, and Perilla frutescens is recommended to be 5-10 grams per day for adults. The efficacy and effect of infusion may not be as good as decoction. 1. Huanglian is bitter and cold in nature, strong in clearing heat and drying dampness (removing heat and drying dampness); it is also good at diarrhea and detoxification (getting rid of fire and poison in the body). Damp-heat plumpness (stomach distension and discomfort), vomiting and acid swallowing (to the stomach upward oral pharynx of acid swallowed), etc. have curative effect, soak the specific dosage needs to be determined according to the condition of the general recommendations for adults 2-5 grams per day. It is not recommended to use Huanglian for people with Yin deficiency and fluid injury, and it is not recommended to use Huanglian for people with Spleen and Stomach deficiency (spleen and stomach weakness and coldness). 2. Peilan is pungent and flat in nature, good at awakening the spleen and opening the stomach (promoting the functions of the spleen and stomach), aromatizing dampness and relieving summer heat. It can be used for conditions such as dampness-heat obstruction (stagnation caused by the gathering of dampness and heat evils), malodor in the mouth, summer-dampness symptoms, and the first signs of wetness-warmth (warmth caused by the feeling of dampness-heat). The exact dosage of the infusion varies from person to person, and it is mostly recommended that adults take 5-10 grams per day. Its adverse effects and contraindications are not clear. Yellow dock and pellitory infusion may not reach the standard of efficacy of decoction, and can only improve the above conditions, to achieve the therapeutic purpose, but also need to be under the guidance of a professional doctor to identify the symptoms and treatments.