Cochlear implants are a good solution for children with hearing loss, but it is impossible for them to start talking right away; their language skills need to be built up through rehabilitation. There are certain rules for post-operative cochlear implant rehabilitation: the poorer the preoperative speech foundation and the older the child, the more difficult and longer the rehabilitation will be. (The best age for implantation and rehabilitation is 0-3 years old.) Children implanted after the age of 2 years must undergo professional speech rehabilitation, while children before the age of 2 years must undergo home rehabilitation. Children with normal hearing acquire simple speech between the ages of 1.5 and 2 years, so in general, children acquire simple speech about 1-1.5 years after the cochlear implant. However, it is important to note that individual children vary greatly, either earlier than this (e.g., those who have had hearing aids before surgery) or later than this (e.g., older implantation age, autism, etc.) Speech rehabilitation is a long and arduous process. The progress and effectiveness of speech rehab depends on a variety of factors such as one’s own condition, school and family. Among them, the role of family cannot be ignored. Optimistic family members, active participation and cooperation in rehabilitation training can effectively promote the child’s speech rehabilitation.