There are two causes of yellow hair in small babies, as follows: 1, because of the parents’ yellow hair, small babies are affected by genetic factors, so they will have yellow hair. But the child’s diet, sleep and play have no effect, this situation does not require intervention treatment. 2, because the baby will have yellow hair performance when the baby zinc deficiency, the baby zinc deficiency will have a loss of appetite, there will be poor eating phenomenon, at the same time the baby will have a slight weight loss performance. Parents can take their baby to the hospital for a trace element test, after which zinc supplementation can be carried out, or they can choose to give oral zinc gluconate oral solution for zinc supplementation, and at the same time, they can supplement foods that contain more zinc in their daily life, such as meat, dried fruits and green vegetables, all of which are foods with high zinc content and can be given appropriately.