If the bladder meridian is blocked, there will be wind and cold, neck discomfort, swelling and pain in the muscles of the lower back; lumbar and knee pain (a feeling of weakness and tenderness in the lower back and knees) and diseases related to the urinary system. The foot solar bladder meridian is the longest meridian in the body, it starts from the eyes and goes up through the top of the head and into the brain, comes out from the neck and then goes down along the spine, there are two lateral lines on both sides of the spine, and passes through the buttocks and then goes down along the thighs and the backs of the lower legs to the ankles, and then along the backs of the feet to the little toes. It is one of the most abundant meridians of the body’s yang energy, if the foot solar bladder meridian is not open, there will be a bad wind and fear of cold, neck discomfort, lumbar and dorsal muscle distension and pain; lumbar and knee pain and weakness, varicose veins, frequent urination, urination; urine, yellow, prostate hypertrophy and other diseases. The foot solar bladder meridian is closely related to external surface symptoms (mainly manifested as respiratory symptoms after feeling external evils), lumbar back diseases and urinary system diseases. It is recommended that patients with related symptoms go to the hospital as soon as possible, and be treated by a professional doctor according to their condition, so as not to miss their condition.