If the back pain is caused by dampness-heat attack, it can be treated with the addition and subtraction of Ba Zheng San as prescribed by the doctor. Eight Zheng San is a kind of traditional Chinese medicine prescription, is composed of psyllium, quomai, knotgrass, talc, gardenia kernel and other Chinese herbs, has the efficacy of clearing heat and diarrhea, diuresis and gonorrhea. Clinically, Bazheng San is mostly used to treat dampness-heat gonorrhea syndrome (increased frequency of urination, astringent pain of gonorrhea), such as astringent pain when drowning, muddy red color of urine, acute fullness in the abdomen, dry mouth and throat, yellowish greasy tongue, poor gonorrhea, and retention of urine (dribbling of urine or inability to urinate). Lumbar pain is usually caused by cold-dampness or damp-heat attack, lumbar strain or lumbar contusion, which leads to poor circulation of qi and blood in the lumbar region, causing pain in the lumbar spine or paraspinal region. Patients with lumbago caused by dampness-heat attack can be treated with Bazheng San plus or minus as prescribed by the doctor. Patients with lumbar pain should be treated after identifying the cause of the disease in Chinese medicine to avoid the adverse consequences caused by blind use of medication.