Patient: Description of the condition (onset, main symptoms, hospital, etc.): Patient: my grandson is only 4 months old, my son and daughter-in-law are deaf, to the Wuxi Maternal and Child Health Hospital to measure hearing, the report is written on the binaural hearing threshold is greater than 70 decibels, as if the report out of the less standardized, when the baby’s grandmother to take to the baby, I’m now more anxious, and I don’t know where to go to find out where it’s best to go to find out how big to find out what’s best to do, I heard people say! I heard someone say that cochlear implants can be done, so I desperately want to know how old is the best age for my baby to have the surgery. I am from the countryside, and my condition is not good, so I don’t want to take a detour. Lin Jinchao, Department of Otorhinolaryngology, Quanzhou First Hospital: Cochlear implantation should be carried out during the development of the auditory cortex in infants and young children with hearing loss, and the age of surgery is roughly 2-4 years old.