Objective To compare the differences of recognition rates between binaural and monaural disyllabic words of children with bilateral CI under quiet and noisy conditions and the difference of recognition rates between easy and hard words under noise conditions; To analyze the factors affecting the recognition rates of disyllabic words. Methods Testing disyllabic words under quiet and noisy conditions by Mandarin lexical neighborhood test

and comparing the differences of recognition rates between binaural and monaural disyllabic words and difference of recognition rates between easy and hard words by paired t test. Results Under quiet and noisy conditions

the recognition rate of bi-syllables in binaural and monaural CI is significantly different（P<0.05）. Under the condition of noise

the recognition rates of easy and hard words are significantly different（P<0.01）. The recognition rate of disyllabic words is also affected by the age of CI

speech intelligibility

inner ear deformity types and other factors. Conclusion Under quiet and noisy conditions

binaural CI can improve the recognition rate of disyllables; Under the condition of noise

the advantage of binaural CI is more prominent; Children’s speech recognition rate is influenced by easy and hard words

and children’s individuality.