The redness of the tip of the tongue of a 1 year old baby may be caused by tongue burns, tongue infection and so on. 1. tongue scald: when breastfeeding, may be because the temperature of the nipple is too high, or the water temperature of the milk powder is too high factors lead to the tongue is scalded, and 1 year old baby tongue red. 2. Tongue inflammation: most of the baby’s resistance is relatively weak, when the baby’s environment is not hygienic, the outside world of viruses, bacteria and other disease-causing factors may enter the oral cavity, in the oral cavity caused by the infection, the formation of Tongue inflammation, there may be a 1 year old baby tongue redness. 1 year old baby tongue redness, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.