Diagnosis and treatment of various developmental behavioral disorders in children (autism, ADHD, children with learning difficulties, etc.). ); Early education for normal children and early intervention for high-risk premature infants; Children's temperament and its personalized education. Established the first professional institution of children's developmental behavior disorder in Guangdong Province (Children's Developmental Behavior Center of the Third Affiliated Hospital of Sun Yat-sen Medical University), comprehensively carried out comprehensive prevention and treatment of children's developmental behavior disorder, and achieved remarkable results; Guangdong province has taken the lead in the prevention and treatment of children's autism, Asperger's syndrome and other diseases. Guangdong province is at the domestic advanced level in the prevention and treatment of children's pervasive developmental disorder, and has helped many provinces and cities in China to establish a base for structured education to treat children's pervasive developmental disorder. Take the lead in formulating the temperament scale for early infants in China, and promote individualized parenting activities based on temperament in maternal and child health care institutions at all levels. Hosting or participating in a number of national, provincial and municipal science and technology projects. Published more than 60 papers, lectures, comments and summaries in professional magazines, and published dozens of popular science articles in newspapers and magazines. Related work has been reported by CCTV and provincial and municipal TV stations for many times.