The main causes of cold feet are arterial ischemia of the lower limbs and lumbar spine lesions, which can be treated with medication or surgery according to the different causes. 1. Lower limb artery ischemia: when the lower limb arteries are narrowed or occluded, it is difficult for the blood to reach the distal end of the lower limbs completely, resulting in cold feet, which may be accompanied by pale skin, weakened or disappeared dorsal arteries of the foot, etc. It is necessary to carry out ultrasound of the arteries of the lower limbs to make a clear diagnosis, and drugs such as Mazeline and Prostaglandin may be used, or surgical treatments such as percutaneous balloon angioplasty may be performed. 2. Lumbar spine lesions: when there is lumbar disc herniation or lumbar spine osteophytes, it will compress the nerves, thus subjectively causing the phenomenon of cold feet, but it is likely that the approvals are normal, which can be treated with physiotherapy and surgery. It is recommended to go to the peripheral vascular department or orthopedics in time for further examination, targeted treatment, usually pay attention to warmth, appropriate foot soaking.