Wu Ling San can be used to treat persistent spontaneous sweating (involuntary sweating during the day, aggravated by the slightest movement of sweating), but whether it can be cured or not needs to be decided according to the patient’s condition and physique. Wu Ling San is composed of Poria, Zea Laxa, Poria, Cinnamon and Fried Atractylodes Macrocephalae. It has the efficacy of warming yang and transforming qi (warming the body’s yang qi), inducing dampness and promoting the flow of water. It is used for edema caused by Yang not transforming Qi (blockage of Qi in the body), water-dampness internal storage (water-dampness stays in the body), symptoms of urinary incontinence (irregular urination), edema and abdominal distension, vomiting and diarrhea, and thirst for water. The adverse reactions and contraindications of Wu Ling San are not clear. Patients with persistent spontaneous sweating are advised to seek prompt medical attention for standardized treatment. If Wu Ling San is needed, it must be used under the guidance of a professional doctor.