Most babies with cold and purple hands and feet are cold or bruised due to poor blood circulation and insufficient blood supply to the peripheral nerves. Another reason is that the child’s potassium level is low and the frequency of bowel movements is low. The diagnosis can be confirmed by the A-factor 5 test. Nutritional deficiencies, the child is prone to picky eating, or the intake of nutrients is insufficient, resulting in malnutrition, low calorie or protein intake, and a lack of mineral elements. There are also microcirculation disorders or metabolic disorders that cause this condition. If your child has this condition, it is best to take your child to the local hospital for examination to see what the cause is.