The causes of drooling in ten-month-old children include the following: First, it is caused by the child being in the teething stage. If a child is in the process of erupting teeth, and the child is relatively young and the floor of the mouth is shallow, these factors can cause the child to drool more severely. As the child’s teeth gradually erupt and the floor of the mouth gradually turns into a normal anatomical structure, the drooling will naturally be relieved. Second, the symptoms are caused by children with mouth ulcers. If a child has an ulcer in the mouth, it will cause pain in the child’s mouth and the symptoms of drooling, so it is time to give the child timely treatment of oral ulcers, such as the application of ribavirin spray.