Six-year-old children do not speak clearly, it is recommended to go to a regular hospital pediatrics for a full body checkup, clear causes of children do not speak after the cause, and then choose the appropriate department, for follow-up treatment, such as pediatric otolaryngology, stomatology, pediatric neurology, etc. 1, pediatric otolaryngology: the children’s ear, nose and throat, stomatology, the children’s nervous system, and so on. Usually, the cause of six-year-old children do not speak clearly is commonly due to hearing impairment or vocal cord problems, tongue tie dysplasia, malocclusion or neurological diseases, etc. 1, pediatric otorhinolaryngology: six-year-old children if there is a congenital hearing impairment, post-developmental lesions of the vocal cords and other conditions, which may affect the language function, the symptoms of unclear speech, you can hang up with the Department of pediatric otorhinolaryngology for further examination and treatment. 2, stomatology, pediatric neurology, and so on. Stomatology: If six-year-old children have symptoms of unclear speech due to short tongue tie, malocclusion, etc., they can hang up the stomatology department for treatment, and the follow-up can be treated by surgery according to the doctor’s suggestion; 3. Pediatric Neurology: Six-year-old children with central nervous system lesions caused by cerebral palsy and other diseases may also have unclear speech, and they can hang up the pediatric neurology department for active treatment of brain diseases. Pediatric Neurology: children with cerebral palsy and other diseases that lead to central nervous system lesions may also have unclear speech, so they can register with Pediatric Neurology for active treatment of brain diseases; 4. Other: unclear speech may also be related to psychological disorders and other factors, so you can also choose to consult with Pediatric Psychiatry and receive timely psychological treatment to improve the unclear speech of six-year-old children.