The causes of pain at the root of the left thigh are as follows: 1. acute pain: inflammation of lymph nodes or local injury, etc.; 2. chronic pain: pain period of more than 1 month and more causes, including high lumbar disc herniation, need to pursue medical history, such as a history of tumor, tumor metastasis or pain caused by other conditions, must be clearly diagnosed after symptomatic treatment, in order to be targeted. High lumbar disc herniation can be treated by minimally invasive and minimally invasive interventional methods of pain medicine, and pain medicine is characterized firstly by non-invasive treatment of lumbar disc herniation, and also by minimally invasive and minimally invasive interventions, which can achieve satisfactory results in treating thigh root pain with professional methods. Therefore, for thigh root pain, it is necessary to first distinguish between acute pain or chronic pain, and then to clarify the specific cause in order to achieve effective treatment.