One-year-old baby hands yellowish may be dietary factors, anemia and jaundice and other causes. 1. Dietary factors: one year old babies eat too much pumpkin, carrots and other vegetables, resulting in excessive carotene in the body can not be fully and quickly absorbed, can not be converted to vitamin A, there will be the symptoms of yellowish hands. 2. anemia: when a year-old baby body lack of iron and other trace elements, etc., will cause iron deficiency anemia, may lead to the baby appear hand yellow symptoms. 3. Jaundice: when the bilirubin metabolism in the body of a one-year-old baby is abnormal, he or she may suffer from jaundice, which is clinically manifested as localized yellowing of the skin and other symptoms, such as the hands, face, and so on. When a one year old baby has the symptom of yellowish hands, it is recommended that parents take the baby to the hospital in time for examination and diagnosis, and under the guidance of the doctor for treatment.