Inclusion Criteria:  - Trial group  Study time: March 9, 2021, to March 9, 2022 ; Study site: The First Affiliated Hospital of Shandong First Medical University; Patients with lumbar disc herniation who have not undergone lumbar surgery and who meet the diagnostic gold standard of symptoms, signs and imaging examinations should be comprehensively assessed.; Patients who were first diagnosed with lumbar disc herniation less than 4 months ago; Patients with a range of ages of 20-50 years and stable vital signs; Patients who have informed consent to receive the pulse collection;  control group  Study time: March 9, 2021, to March 9, 2022 ; Study site: The First Affiliated Hospital of Shandong First Medical University; Relatively healthy people without lumbar disc herniation diagnosis; Patients with a range of ages of 20-50 years and stable vital signs; Patients who have informed consent to accept the pulse collection;  Exclusion Criteria:  - Trial group  Patients with lumbar spinal stenosis, lumbar tuberculosis, vertebral metastases, nerve root and cauda equina tumors, hip osteoarthropathy or aseptic necrosis of the femoral head, piriformis syndrome, ankylosing spondylitis, herpes zoster and other lumbar diseases; Patients with diseases of the urinary system and reproductive system; Patients who have undergone lumbar disc surgery; Pregnant or lactating women; Patients with other thoracic diseases; Patients with gallbladder, pancreas and other diseases adjacent to the liver; Patients with severe infectious diseases; Those who are not easy to collect pulse manifestation such as pulse on back of wrist and oblique-running pulse; Incomplete data due to subjective or objective reasons affect the judgment of results; Patients with Parkinson's disease or other limb tremor; Patients with atrial fibrillation.  control group  Patients with lumbar disc herniation; Patients suffering from lumbar tuberculosis, ankylosing spondylitis and other serious diseases and difficult to maintain posture for a certain period of time; Pregnant or lactating women; Patients with severe infectious diseases; Those who are not easy to collect pulse manifestation such as pulse on back of wrist and oblique-running pulse; Incomplete data due to subjective or objective reasons affect the judgment of results; Patients with Parkinson's disease or other limb tremor; Patients with atrial fibrillation.