1.It is difficult to sit still on occasions when you need to sit still, and you often move around. 2. Easily excited and impulsive. 3.Often interferes with the activities of other children. 4.Does things carelessly and often does not finish. 5.It is difficult to concentrate on listening to lectures, doing homework or other things that require sustained attention. 6.Requests must be met immediately or emotional reactions will occur. 7.Often talk too much, interrupt or make noise. 8.Difficulty in observing order and discipline in group activities. 9.Learning difficulties and poor grades, but not caused by intellectual disability. 10.Clumsy movements, poor refinement and coordination movements. 1.The onset of the disease is in preschool age and the duration of the disease lasts at least 6 months. 2.Symptom criteria: at least 4 of the above behaviors are present. The severity of the symptoms can affect the ability to learn and adapt to the environment to varying degrees. 3. Exclusion criteria: Not caused by mental retardation, childhood psychosis, anxiety states, conduct disorders or neurological disorders. Sensory Integration Disorder (SID) is a disorder of attention, poor learning, restlessness, timidity, shyness, uncoordinated movements, poor balance, slow reactions or over-sensitivity in childhood. This disorder is the underlying cause of children’s learning difficulties. Experts believe that sensorimotor disorders are caused by the failure of the lower parts of the brain to apply and organize information effectively, or by urbanization and small families caused by modernization in recent years, which greatly limit children’s opportunities to contact nature and interact with people, and grow up with television and computers, lacking input from multiple body senses and information. About one-third of Chinese children have varying degrees of sensorimotor disorders. Correction is through a series of play-based training. Foster Care Issues Foster care is a unique form of parenting in China. Young parents have to work and study and cannot be home all day with their children. There are also a few parents who want to have fun and leave their children at the home of their parents or other caregivers. When the child grows up and returns to the parents, the parents do not know their child because they have lost the early emotional connection between the child and the parents, and the child misses his grandfather, grandmother or other caregivers who spent time with him all day. As a result, children who are otherwise bright and normal may develop stuttering, urine loss, loneliness or other mental illnesses. Professor Guotai Tao points out that foster care problems are one of the causes of mental deficiencies or other mental illnesses in children. He recommends: without special reasons, do not foster out, no way also strive to foster, morning drop-off, evening pick-up. If you have to foster, you should visit often and pick up the child to have an excessive, bad habits slowly corrected.