Gastritis, belongs to the category of “stomachache”. Dendrobium belongs to the category of yin-nourishing herbs, with the effects of benefiting the stomach and generating fluids (nourishing the stomach by replenishing the fluids in the stomach), and nourishing yin and clearing heat (nourishing the yin essence and clearing away heat). It can have a certain therapeutic effect if gastritis is characterized by stomach yin deficiency, but if it is characterized by other conditions, it is not recommended to use this medicine for treatment. 1. Stomach yin deficiency evidence: Dendrobium is sweet and cold, and mainly enters the stomach meridian. It is suitable for the hidden burning pain in stomach and epigastric cavity caused by stomach yin deficiency (insufficient yin fluid in stomach), dry mouth and tongue, dullness (lack of appetite, reduced amount of food) and dry vomiting, etc. It is often used together with bei sha shen (northern saxifrage) and yu zhu (jade bamboo). Treatment of thirst after illness, available fresh dendrobium and maitake, schizandra decoction tea drink. 2. Kidney yin deficiency: Dendrobium can nourish kidney yin, but also can clear away the deficiency heat. For the treatment of yin fire, bone vapor and labor heat, it can be used with Zhimu and Huangbai. For treating impotence and weakness of muscles and bones in kidney deficiency and essence loss, it is often used together with hyssop and cornelian cherry. It is often used together with wolfberry and chrysanthemum to treat darkness of the eyes and blurred vision in the case of yin deficiency of the liver and kidneys (deficiency of yin fluid in the liver and kidneys). It is forbidden to take if the yin is not injured in the early stage of warm-heat disease, if the damp-warm (warm disease caused by feeling dampness and heat) disease has not been transformed into dryness, or if the spleen and stomach are weak and cold. It is recommended to consult a doctor for specific medication.