Plantain is a kind of Chinese herbal medicine, which has the effect of clearing heat and removing toxins (removing heat, poison and evil Qi from the body), diuretic and diaphoretic (improving the problem of dribbling in urine and the problem of small and incomprehensible amount of urine). When psyllium is boiled in water, it can diuretic and clear heat, but it plays a more limited role. Psyllium is cold in nature, sweet in taste and belongs to the kidney, liver, small intestine and lung meridians. Plantain has the effects of clearing heat and diuresis, relieving pain through gonorrhea, cooling the blood and removing toxins (referring to the treatment of blood-heat and toxicity), and expectorating phlegm. It is often used in treating symptoms such as heat drenching (burning and stinging pain is obvious when urinating, accompanied by frequent urination and urgency, and discomfort of traction in the abdomen) and astringent pain, urination and swelling of limbs, summer dampness and diarrhea (diarrhea caused by feeling summer dampness in summer), vomiting and epistaxis, carbuncle and sores, and phlegm-heat coughing. When plantain is boiled in water, it can play the above roles, but it plays a more limited role, and cannot be used as a substitute for medication in the event of illness. The use of traditional Chinese medicine should be based on the four diagnosis, diagnosis and treatment to choose the appropriate rationale and prescription, in order to achieve the therapeutic purpose. It is recommended to consult a doctor if you feel unwell.