A one-year-old child with white gums may be caused by teething, anemia, thrush and so on. 1. Teething: it may be due to the baby teeth eruption outward, which will lead to a transient whitening of the gums, is a normal physiological phenomenon. 2. Anemia: most common in iron deficiency anemia, but also may be thalassemia, megaloblastic anemia, etc., will easily lead to white gums, and accompanied by fatigue, white lips and other symptoms. 3. Thrush: mainly caused by Candida infection, can lead to the oral mucosa appear milky white membrane, and not easy to peel. More than a year old child gums white, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.