Women’s left leg numbness is what signs clinically generally refers to women’s left leg numbness is what aura, women’s left leg numbness can be a precursor of the following diseases: first, lumbar disc herniation: lumbar disc herniation can lead to leg pain, numbness when the compression of the nerve root, commonly found in the front of the thighs and calves of the lateral, which is based on the different segments of the different localization of the examination, often need to shoot lumbar discs of the CT, It is often necessary to take CT, MRI of lumbar disc for further diagnosis and treatment. Secondly, head disease: head tumor can press the nerve and lead to numbness of one side of the leg, which can be accompanied by leg weakness, often with gradual numbness and weakness, and then we should check the MRI of the head for diagnosis and treatment. Third, peripheral neuropathy: common in elderly women, often due to chronic inflammation of peripheral nerves, or due to secondary diabetes and lead to numbness of the legs, which should be combined with medical history, physical examination for diagnosis and treatment.