There are several common reasons for the lack of strength in the feet: First, severe cervical spinal stenosis and other neck diseases will compress the spinal cord nerves, resulting in cervical spinal cord nerve conduction dysfunction, the patient will have weakness in both lower limbs, and the feet tend to be soft in the process of walking while falling down easily. Patients usually have clinical symptoms in the neck, and through MRI, it can be found that the cervical spinal cord is severely damaged, and even degenerative necrosis occurs. Secondly, lumbar spinal stenosis, lumbar disc herniation and other lumbar spine diseases can also compress the lumbar spinal cord nerves, which can make the lower limb muscle strength significantly reduced, and the feet are weak, and intermittent claudication will occur when walking, and if it is not cured for a long period of time, it will also occur in the lower limb muscle atrophy and other serious consequences.