Neurological growth and development is the physiological basis of neuropsychological development in children, especially brain development, which is the fastest in the first 2 years. The criteria for neurological development contain a comprehensive determination of perception, movement, language, cognition, emotion, personality and sociality. At 3 months of age, babies can hold their heads straight and steady and laugh out loud; at 4 months of age, they can scream loudly; at 6 months of age, they can know their own names and roll over on their backs; at 7 months of age, they can sit alone freely; at 9 months of age, they can say welcome and goodbye and crawl; at 11 months of age, they can stand for a while; at 1 year of age, they can stand independently and call their parents consciously; they know how to dress and cooperate; etc. You can take your baby to the child health department for a neuropsychological developmental examination and evaluation.