Heavy dampness can be divided into cold-damp evidence and damp-heat evidence, both of which can cause low back pain. Low back pain caused by cold-dampness evidence is mainly manifested by cold pain in the lower back, fear of cold, unfavorable turning, and pain aggravated by cold, which can be reduced by adding Ganjiang Lingzhu Tang, which can dispel cold and dispel dampness, warm the menstruation and invigorate blood. Low back pain caused by damp-heat evidence, with swelling and pain in the lower back as the main symptom, aggravated by heat, aggravated by cloudy weather or humid environment, manifesting as physical lethargy, short and red urine, incomplete urination, and yellow and greasy tongue coating. It can be reduced with Si Miao Wan, which can help clear heat and dampness, soothe tendons and relieve pain.