Consider spinal cord cervical spondylosis, hypokalemia, myasthenia gravis, hypoglycemia, and so on. 1. Spinal cord cervical spondylosis: ischemic degeneration of the spinal cord under pressure, which can lead to soft feet and hands, weakness and heaviness. It can be clearly diagnosed by cervical spine MRI film. 2. Hypokalemia: caused by excessive loss of potassium or insufficient food intake, it can cause weakness of feet and hands, which can be restored to normal by potassium supplementation. 3. Myasthenia gravis: it can cause weakness of arms and legs, and can cause drooping eyelids, difficulty in swallowing and hoarseness. 4. Hypoglycemia: When hypoglycemia occurs, there is weakness of the feet and hands, sweating and panic, which can be relieved by supplementing glucose. There are many reasons for soft feet and hands, you need to go to the hospital in time to check the cause of the disease, and treat the cause of the disease.