There are many reasons why babies have purple lips, so you should pay attention during this period to understand that purple lips may be caused by poor breathing, or it may be caused by the heart, and there may be a lack of oxygen. 1, baby if the phenomenon of purple lips, may also be poor breathing, more likely to be the cause of the heart, after this phenomenon is best to go to the hospital to do an ultrasound to X-rays and other checks, and at this stage should pay attention to maintain a good breathing status. 2, the baby appears purple lips phenomenon, may also be due to a cold fever, so in this stage should also pay attention to control down the body temperature, and should pay attention to drink more water. There are also some special drugs that can cause bruising. 3, when children usually cry, it may also lead to purple lips, because excessive crying may also lead to lack of oxygen, so you should also pay attention to the child to maintain a good and happy mood, try to reduce crying, which can also prevent the purple lips. There is also the possibility of bruising when it is particularly cold. Regardless of the cause of purple lips, you should pay attention to go to the hospital in time to check it out, and you should pay attention to keep a stable and warm environment for your baby, and you should pay attention to reduce crying as much as possible and seek medical attention in time. Each child’s symptoms are different, so it is important to find abnormalities and go to the hospital early.