The infant micturition period usually ends around the age of one week. It is important to emphasize that the micturition period is a psychoanalytic concept and a classical Freudian psychoanalytic concept, and that the lexical meaning of the micturition period is to be understood and interpreted within the system of this theory. In psychoanalytic theory, the oropharyngeal period is the period of time from birth to the age of one week in which the infant individual is mainly expressed as exploring the world. It focuses on the mouth and lips, relying on actions such as sucking, chewing, swallowing, etc., to obtain some pleasure or satisfaction through oral activities, which is also the most primitive stage of individual psychosexual development and belongs to the concept in the psychoanalytic theory. Therefore, it is not a universal or common concept, and it needs to be understood in the context of psychoanalytic theory, and it is not recommended for lay people to pursue the meaning of words too much. Babies like to bite objects during the micturition phase, and parents do not have to deliberately stop this behavior. Parents need to pay attention to hygiene and safety to prevent their babies from biting dangerous and unhygienic objects, and try to satisfy their babies’ oral appetite.