Teething in a one-year-old baby does not necessarily lead to fever. Most babies should not have fever when teething, but some babies will show fever when teething. The main causes of fever include: during teething baby likes to bite things everywhere, such as clothes, furniture, hands, etc., which can lead to partial damage to the gums and infection; the tooth growth process squeezes part of the gums and causes inflammation leading to fever; the accumulation of food debris and tartar around the crown of the tooth, which leads to inflammation. Babies will have some abnormal performance during teething, and the performance is different for different babies. Most babies with fever caused by teething have a low fever, but generally have a temperature <38°C and the fever will be relieved after 1-2 days with the eruption of teeth. After the fever is generally no medication, you need to drink more warm water, monitor the baby’s temperature regularly, pay attention to oral hygiene and do a good job of cleaning the mouth and disinfecting things that the baby can easily bite. If the fever is serious, consider whether the baby has fever because of teething or the fever and teething time coincide, then you need to go to the hospital, according to the actual situation of the baby for symptomatic treatment, such as local periodontal abscesses, need to carry out periodontal treatment, may also need to use symptomatic antibiotics, antipyretic and analgesic drugs to relieve the baby’s fever. Pay attention to oral care after your baby starts teething. Use a baby toothbrush or wrap a clean gauze around your finger with warm water to clean your baby’s teeth after feeding before bedtime.