Objective To explore the rehabilitation effects and influential factors of hearing-impaired children with cochlear implant. Methods To evaluate the rehabilitation effects of 238 hearing-impaired children with one year using of cochlear implants from speech recognition rate, the age of language, CAP and SIR. Results (1)Hearing-impaired children before and after survey have significant difference in the speech recognition rate, the age of language, CAP and SIR(P<0.001). (2)CAP, SIR and speech recognition rate of all age groups show no difference. (3)There is significant difference in speech recognition of cochlear implant children with different hearing-aid threshold(F=5.56, P<0.01). The optimal hearing-aid threshold group after cochlear implants works best. The results of language age, CAP and SIR are related to training period. (4)There is significant positive correlation in speech recognition, language age, CAP and SIR before and after cochlear implant(P<0.01). Conclusion There is significant rehabilitation results of hearing-impaired children with one-year using of cochlear implants. The crucial influential factors of results are hearing-aid threshold and training period.