In life, we often hear people around us say that they have back pain after sitting for a long time, but a series of tests have not found any obvious abnormality. These patients usually feel pain and discomfort in the lumbar region, and their activities are limited, and the pain can reach the buttocks and the front of the thighs; the lumbar region may not be painful when they lean back, but it is limited when they bend to the opposite side. Many people think that they are suffering from a common lumbar disc herniation, but they do not know that this may be a manifestation of the third lumbar transverse herniation syndrome. Anatomically, because the third lumbar transverse process is the longest and the center of lumbar activity, its tip is susceptible to injury from external forces, a condition called third lumbar transverse process syndrome. This disease is most often seen in young people with a long and lean body type. The main cause of this disease is the high stress on the transverse process of the third lumbar vertebra due to anatomical and biomechanical factors. When the lumbar spine is flexed, bent sideways and rotated, the soft tissues attached to the tip of the transverse process are prone to pathological changes such as muscle tearing and rupture of small blood vessels, causing tissue edema, compression and stimulation of the lumbar nerve, thus causing spasm of the innervated muscles and the formation of fibrosis and scar-like tissue locally, resulting in a series of symptoms. Anatomical variations such as excessive length of the transverse process of the third lumbar vertebra or asymmetry on both sides are also a cause. Cold stimulation can also induce the disease. On physical examination of the patient, the physician may palpate significant pressure pain and limited muscle tension or muscle spasm at the tip of the transverse process of the third lumbar vertebrae at the outer edge of the transverse process, equivalent to 4 cm next to the spinous process of the third lumbar vertebrae, especially in the lean and long type of patients. The radiological pain can reach the thighs and knees when pressed, and a long transverse process of the third lumbar vertebra can be seen on X-ray. For treatment, patients with milder symptoms can achieve therapeutic effects through lumbar muscle exercises. Common exercise: you can use five-point lumbar hip lift exercise in the morning and evening, each exercise fifty times, after exercise morning and evening hot water or local hot compress, generally need to adhere to exercise for three months, usually do not exceed one hour when sitting, you need to get up on their own to move the waist. It can also be combined with self-tui-na treatment. Patients use the top of the thumb at the pressure point of the transverse process of the 3rd lumbar vertebra, press hard with breathing, reduce when breathing in, exhale hard, 30 times each time, then gently tap with the fist for 5 minutes, rub the palms of both hands hot and then gently rub the painful area. This can be done 3-5 times a day. Acupuncture, massage, physical therapy, topical medication and oral anti-inflammatory and analgesic medication can be given when the symptoms are heavy. Local water injection therapy is also commonly used to relieve pain and eliminate inflammatory reactions. If conservative treatment is ineffective, recurrent or long-term incurable, surgical excision of the overgrown transverse process tip and surrounding inflammatory tissue can be considered, and the compressed lateral femoral cutaneous nerve can be released at the same time during surgery to obtain good clinical results.