Patients with neurodevelopmental delay require special care, and it is a group of diseases that are highlighted by mental developmental disorders. Studies have shown that neonatal neurobehavioral development is influenced by several factors. Good nutritional status during pregnancy, long gestational weeks and good mood during pregnancy are beneficial for neonatal neurobehavioral development, and vice versa. So, how should neurodevelopmental delay be diagnosed? Diagnosis of neurodevelopmental delay: ① onset before developmental maturity; ② IQ (according to Wechsler scale) below 70; IQ in the range of 70-85 is borderline intelligence; ③ there are varying degrees of adaptation difficulties. The diagnostic criteria for mild mental retardation are: ① IQ 55-69; ② poor academic performance, often failing or repeating in ordinary school, or poor work ability, only simple manual operations, can learn certain livelihood skills and household chores; ③ can take care of themselves; ④ no obvious language impairment. The diagnostic criteria for moderate mental retardation are: ① IQ 40-54; ② unable to adapt to ordinary school learning, can only calculate single-digit addition and subtraction; ③ can engage in simple work, but the quality is poor and inefficient; ④ learn to take care of simple life, but often need supervision and help; ⑤ can master the language of daily life, but the vocabulary is poor. The diagnostic criteria for severe mental retardation are: ① IQ 25-39; ② inability to learn and work, unable to count; ③ inability to take care of themselves; ④ severely impaired speech function, unable to communicate effectively in language. The diagnostic criteria for very severe mental retardation are: ① IQ below 25; ② complete loss of social function and cannot escape from danger; ③ complete inability to take care of oneself; ④ lack of speech function. The above is the introduction of how to diagnose neurodevelopmental delay, I hope it will be helpful to you. Experts say that neurodevelopmental delay has many causes and should be treated with comprehensive prevention and treatment measures. The treatment of the disease can not be completed overnight. Patients need to be persistent, not to give up, not to give up. Be confident in yourself and choose the right treatment method.