Psyllium is a Chinese herb that is the whole herb of Plantago ovata or Psyllium flatulatum of the Plantago family. It has the effects of clearing heat, diuretic and diaphoretic (to improve the problem of dribbling in urine, small amount of urine that does not pass), expectorant, cooling the blood, and detoxification. Plantain is sweet in flavor and cold in nature. It belongs to the liver, kidney, lung and small intestine meridians. Clinically, it is used to treat feverish drenching (burning stinging pain during urination, accompanied by urinary frequency and urgency, abdominal traction discomfort), astringent pain, edema and urination, summer dampness and diarrhea (diarrhea caused by summer dampness in summer), phlegm-heat coughing, vomiting epistaxis, carbuncle, swelling, sores and poison, etc.. It is forbidden to use if the essence and qi are not solidified. The adverse effects of this drug are not clear, it should be taken under the guidance of a professional physician, and should not be used blindly on one’s own so as not to cause any delay in the condition.