The large intestine point is a kind of acupoint of the foot solar bladder meridian, which corresponds to the large intestine and is the location where the qi of the large intestine is infused into the dorsal lumbar region. This point is important for the clinical diagnosis and treatment of large intestine diseases. The positioning of this point is taken 1.5 inches below the spinous process of the fourth lumbar vertebra in the lumbar region, and the main function of this point is to pass down the intestinal organs, regulate qi and relieve pain, so it is first used clinically to treat diseases of the large intestinal organs, such as abdominal distension, abdominal pain, diarrhea, constipation, dysentery, etc. At the same time, because this point is located in the lumbar region, it can treat lumbar back pain when taken locally, and clinical The common lumbar muscle strain and lumbar disc herniation can be treated with DAIYU, together with ShangQiHai and GuanYuan, in addition to the acupuncture points of Chibian, HuanYuanXuan and YangLingQuan, which can also achieve good clinical results.