“Long-term low fever to take a side of Chinese medicine on the good” is not appropriate, Chinese medicine treatment of disease follow the principle of evidence-based treatment, the cause of long-term low fever symptoms are Yin deficiency fever, gas depression fever, damp depression fever, etc., the patient needs to be standardized treatment under the guidance of a professional physician, follow the doctor’s instructions for the use of medication. 1. Yin deficiency fever: symptoms of afternoon hot flashes, or fever at night, hot hands and feet, irritability, sleeplessness, dreamy, night sweating (abnormal sweating after sleeping, waking up sweating stops), dry mouth and pharynx, tongue red, or cracked, and so on. The treatment is to nourish yin and clear away heat, which can be treated by adding or subtracting Qing Bone San. 2. Fever due to qi depression: fever, either low or high, often flaring up or worsening after exertion, tiredness, weakness, shortness of breath and laziness, spontaneous sweating (involuntary sweating during the daytime, aggravated by sweating with a little movement), and loose stools with scanty food (scanty and unshapely stools), etc. The treatment is to benefit qi and strengthen the spleen. The treatment is to benefit qi and strengthen the spleen, and to remove heat with sweet and warm herbs (using herbs with sweet flavor and warm nature to treat body heat), which can be treated by tonifying the middle and benefiting qi soup with additional reduction. 3. Fever due to dampness and depression: symptoms include low-grade fever, high heat in the afternoon, irritable heat in the heart (irritable and sultry), tightness in the chest and epigastric plumpness, inappetence for food and drink, vomiting, and scanty or mucousy stools. For treatment, drying dampness and resolving phlegm (expelling dampness by drying dampness and resolving phlegm), clearing heat and harmonizing the middle, Huanglian Wengdian Tang can be chosen to treat the patient with the addition and subtraction of Zhonghe Tang. The patient’s prolonged low-grade fever may also be caused by other reasons, and specific medication should be administered under the guidance of a Chinese medicine practitioner to identify the cause.