If there is long-term numbness in the joints, the following causes can be considered: First, it may be a local blood circulation disorder, such as local swelling and pain or bruising in the joints after a fall, which can cause numbness and pain in the joints, and can be caused by external application of bruising medicine or safflower oil or the like. Second, it may be caused by cerebrovascular lesions of joint innervation disorders, mostly accompanied by numbness, swelling and pain in the partial hemiplegia, if this is the case, there will be sudden dizziness, headache, fall and flutter history, need to promptly go to the neurology department for consultation. Third, it may be diabetic peripheral neuropathy, the peripheral nerve bundles of diabetic patients are damaged, there may be a number of joints throughout the body numbness, need to strictly control blood sugar. Fourth, uneven force on the lumbar region, which in the long run leads to lumbar disc herniation causing sciatic nerve compression and lower limb conductive joint numbness.