Teething is normal for a three-month-old baby. Since each baby is different, the timing of teething varies and needs to be analyzed. If the baby is born at full term, then teething around three months is normal. Most milk teeth erupt at 6-8 months, but due to genetic factors, the growth and development of babies have differences, different babies have different nutritional conditions, etc., can cause the phenomenon of early eruption of baby milk teeth, there may be in three months of the symptoms of long teeth, this is a normal physiological phenomenon, do not need to worry. In our daily life, we need to pay attention to give the baby vitamin supplements, increase the supplemental food on time and regularly, and often take the baby to the sun, so as to ensure that the baby’s growth and development of the necessary nutrients. You can also use a cotton swab to wipe your baby’s mouth after feeding to keep it clean and sanitary.