A 7-month-old baby girl who was born deaf was recently implanted with a cochlear implant, setting a record for the youngest cochlear implant in the UK. The baby, Peggy Evans, was born deaf due to a viral infection during her mother’s pregnancy. The baby girl, Peggy Evans, was born deaf due to a viral infection during her mother’s pregnancy. For the young couple, this was undoubtedly a huge shock. However, due to the latest technology in cochlear implants and the increased safety of the procedure, they decided to get their daughter a cochlear implant despite the risks involved, and eight hours later, Peggy was successfully implanted and is now doing well. Cochlear implants are currently the only treatment for severe to profound sensorineural deafness, and with the large population base in China, cochlear implant cases have increased rapidly in recent years. With the continuous improvement of cochlear implant technology and research on cochlear implant technology in different populations, the indications for cochlear implantation have been expanded and the low age limit for cochlear implantation will be further expanded. Since January 2013, the Department of Otolaryngology-Head and Neck Surgery at Nanjing Children’s Hospital has performed cochlear implantation in three cases of children under 9 months of age using minimally invasive techniques, with good surgical results and a rapid increase in vocabulary and language skills after switching on. Language development in childhood is based on a certain amount of auditory experience. Without sound, it is not enough to rely on physical and eye contact from parents. With the widespread implementation of newborn hearing screening programs, children can often be diagnosed in the first month of life with sensorineural hearing loss. Early auditory rehabilitation with hearing aids applied before 6 months of age can significantly improve vocabulary and phonological abilities and contribute to cognitive and socio-emotional development. Foreign studies have demonstrated that early cochlear implantation significantly improves language skills, and that the ability to receive and express language will become more advantageous with age. Recent literature has reported the benefits of early cochlear implantation for long-term auditory rehabilitation and language skills, with better speech understanding and more pronounced increases in receptive and expressive language skills in patients implanted between the ages of 1 and 2 years old compared to those implanted at less than 12 months. These advantages of early implantation can be demonstrated early in language development. A recent set of studies from the University of Verona, Italy, evaluated long-term (4 to 9 years) outcomes in three groups of pediatric patients: (1) patients implanted before 12 months of age; (2) patients implanted between 12 and 23 months of age; and (3) patients implanted between 24 and 36 months of age. Patients with cochlear implants before 12 months of age had better receptive language skills relative to the other two groups, essentially the same as normal children, compared to patients with cochlear implants at or after 12 months of age. Over the next 9 years, all patients with cochlear implants before 12 months scored above 90% on the language test, while only 38% of patients with cochlear implants between 12 and 23 months of age and 20% of patients with cochlear implants between 24 and 36 months of age scored 76% to 100% on the language test.