Generally speaking, the causes of pale lips in 2-year-old children mainly include the following aspects. First of all, due to the symptoms caused by anemia in children, the occurrence of anemia will cause pale face and white lips as well, which can be determined by checking the hemoglobin concentration in the blood of children. If there is anemia, children should be given more beef, duck blood, etc., and supplemented with ferrous succinate. The second symptom is caused by vomiting in children, which can also cause white lips and face after vomiting.