Gentian herb can be used as a tea substitute, but it is not suitable for everyone. The effects of Gentian Grass as a tea substitute are clearing heat and drying dampness (removing heat and drying dampness), and diarrhea of liver and gall bladder fire. However, the active ingredients in tea are limited, and decoction is recommended. Gentian herb is bitter and cold, with the effect of clearing heat and drying dampness (removing heat and drying dampness) and diarrhea of liver and gallbladder fire, it is suitable for many kinds of dampness-heat diseases. If treating yellowing of body and eyes, swelling and itching of yin and yin, yellow odor under the belt and itching of eczema caused by damp-heat of liver meridian (liver meridian feeling damp-heat evil), it can be used together with Scutellaria baicalensis, Psyllium jasminoides, Gardenia jasminoides, and so on. If the treatment of liver and gallbladder fire caused by headache and redness, tinnitus and deafness, dystocia and bitterness (dystocia and pain in the mouth), convulsions (pediatric diseases mainly manifested by dizziness, convulsions, convulsions), it can be used together with buffalo horn, Xia Gu Cao and dandelion. Gentian herb is very bitter and cold, and should not be taken by people with cold spleen and stomach and yin deficiency and fluid injury. The adverse reactions and contraindications of Gentian herb are not clear. Single-flavored gentian herb tea drink has a limited therapeutic effect, if you feel unwell, it is recommended to consult a hospital in a timely manner, under the guidance of a professional physician, so as not to delay the condition.