The difference between Tongcao and Mutong lies in different flavors and attributed to different meridians, different effects, different treatments and different contraindications, as follows: The taste of the different meridians: Tongcao taste sweet, light, slightly cold, to the lung, stomach meridian. Mutong is bitter, cold, to the heart, small intestine, bladder meridian. Differences in efficacy: Tongcao has a slow draining power and is good at clearing lung heat and entering the qi division, so it can pass the qi up to the lower breast. Mutong is stronger, good at clearing the fire of the heart and small intestine, so that the solid heat out of the urine. Different treatments: Tongcao is mainly used for the treatment of gonorrhea (increased urination, drenching pain) edema, postpartum breast milk, eyesight fainting. Mutong is mainly used for the treatment of heat gonorrhea (burning stinging pain when urinating, accompanied by urinary frequency and urgency, abdominal traction discomfort) astringent pain, edema, mouth and tongue sores, heartburn and urinary redness, menstrual closure of breast milk, paralysis of the larynx (pharyngeal redness, swelling and pain, or dryness, a sense of foreign body, or pharyngeal itching discomfort, dysphagia) pharyngolaryngolaryngolaryngitis, damp-heat paralysis, and so on. Contraindications are different: Tongcao is to take the function of lactation should not be used with malt, qi and yin deficiency (qi and yin deficiency), no internal dampness and heat and pregnant women should be cautious. The contraindications of Mutong are no internal dampness and heat, fluid deficiency, gas weakness, essence slippery, frequent urination and pregnant women should not be taken. If the patient is not feeling well, it is recommended to consult a doctor in time, and it is not advisable to use the medicine by oneself to avoid delaying the condition.