Abstract: ObjectiveTo study the validation of rehabilitation for deaf children with multichannel cochlear implant and to explore the relationship between the age and the rehabilitation effectiveness, and the change of the effectiveness over time.Methods24 prelingually deafened children with multichannel cochlear implant were investigated. And they were divided into two groups (more than 3 years old and less than 3 yeas old). The validation of rehabilitation was assessed in different times before the operation, 3 months, 6 months, 9 months, 12 months after the operation.ResultsThe longer the rehabilitation, the better the validation(P<0.05). The speed of the first group (more than 3 yeas old) is slower than the other group by the time(P<0.05).ConclusionDeaf children with cochlear implant may take more rehabilitation training after the operation.

Key words: deaf, children, multichannel cochlear implant, effectiveness, age, the change over time