The child 1 week 7 months can not speak, mostly related to physiological factors, abnormal intellectual development and other reasons. 1. Physiological factors: the exchange and communication between the family has a lot to do with, if the parents are usually not good at communicating with each other, it will indirectly affect the normal pronunciation of the child, the child’s personality from a young age is also more introverted, not good at expression. Parents need to teach their children patiently and master communication skills. 2. Abnormal intellectual development: Neonatal encephalitis, meningitis, cerebral palsy, etc. may affect the intelligence, leading to mental retardation, developmental delay, backwardness, etc., which may also indirectly affect normal pronunciation. At present, it is necessary to deal with the primary disease and then carry out rehabilitation training, including language training, physical training, pronunciation training and so on. Therefore, it is recommended to consult a doctor first to understand the cause of the child’s inability to speak at the age of one week and seven months, and then seek targeted treatment under the guidance of a specialized physician.