Coldness in both lower limbs of men can be considered to be caused by underdressing, arterial stenosis of lower limbs, lumbar disc herniation, etc. Attention should be paid to adding more clothes, giving medication and physical therapy. 1. Underdressing: underdressing may cause the local tissues to be cooled, which will result in a cold sensation. At this time, you should add more clothes as soon as possible and avoid contact with cold water. 2. Arterial stenosis of the lower limbs: arterial stenosis of the lower limbs will lead to poor blood circulation in the lower limbs, resulting in a feeling of coldness in the lower limbs, you can take drugs to improve microcirculation and expand blood vessels, such as nifedipine, aspirin, etc., and such drugs need to be used under the guidance of a doctor, avoid self-medication. 3. Herniated lumbar intervertebral disc: For patients with herniated lumbar intervertebral disc, physical therapy is very important, and massage, bioelectricity, heat, microwave and other physical therapy can be given to alleviate the symptoms of cold legs. If the above symptoms are not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner, after clarifying the cause, give targeted treatment.