Baby cold hands and feet cold, you can use more warm water to soak feet treatment, promote blood circulation, can also be decocted ginger, white onion, brown sugar tea, with pungent warmth to relieve the effect of sweating. You can also check the routine blood test and analyze the blood picture. If the cold is caused by virus, you can use antiviral drugs to treat the symptoms. If the cold is caused by bacterial infection, antibiotics can be used to treat the symptoms. If the body temperature is too high or the effect of medication is not good, you need to go to the hospital and see a doctor for treatment.