Eight months can do rhinoscopy, need to comprehensive judgment, baby nostrils small, rhinoscopy is generally about 4mm, stretching can not be done, now new some manufacturers are 1.8mm, but not universal, if the equipment allows, the baby’s development is better, and the baby can be tolerated, it is possible to do rhinoscopy. Rhinoscopy can pass through the narrow nasal cavity and nasal passages within the structure of the nasal cavity and nasopharynx and even the internal structure of the sinuses, diagnose whether the patient has sinusitis, nasal polyps, adenoid hypertrophy and other conditions. Rhinoscopy is a commonly used examination method in ENT, which is categorized into anterior rhinoscopy and electronic rhinoscopy, etc. Anterior rhinoscopy is relatively simple and suitable for infants and children of any age after birth. Electronic rhinoscopy is suitable for infants and toddlers who are able to fully cooperate. After the head position is fully fixed, the electronic rhinoscopy is completed without anesthesia. Eight-month-old babies who are conditioned and able to tolerate the examining doctor can have a rhinoscopy. However, it is difficult to make a rhinoscopy for eight-month-old babies if they have small nostrils and the diameter of the rhinoscope is thicker than the one they can reach in or if the baby is not able to cooperate. Whether the eight-month-old baby can do rhinoscopy, according to the conditions of each hospital equipment, as well as the baby’s personal situation by the professional otolaryngologist to decide.