China has the largest number of hearing and speech disorders in the world. According to the second sample survey of the disabled conducted in 2006, there were 27.8 million disabled people in Hong Kong, about half of whom were disabled. The disabled account for 1.53%, and there are about 13,7000 hearing impaired children aged 0 to 6, an increase of about 2.3 million every year. About 2.3 million new babies are born each year. Research shows that more than 95% of exceptional children have been compensated for their residual hearing. How do 95% of hearing-loss children effectively use their remaining rumors? Technical assistance and scientific rehabilitation are effective tools to enable hearing impaired children to use their residual hearing. Therefore, this paper proposes a digital analysis method for speech rehabilitation data of preschool exceptional children to ensure that exceptional children can effectively obtain speech rehabilitation services and enhance their language ability.