There are no studies showing that calcium deficiency causes autism in babies. Autism, also known as autism, is a central nervous system disorder caused by a combination of genetic and environmental effects, common causes include genetic factors, neurotransmitter dysfunction, brain development abnormalities, immune system defects, etc. There is no clear research to show that a lack of calcium will lead to autistic children, calcium deficiency can lead to fetal rickets, dental development abnormalities, bone development abnormalities, brain neurological abnormalities and so on. Autism should be implemented rehabilitation training, cultivate children’s interests, improve children’s social adaptability, strengthen the psychological treatment, if necessary, follow the doctor’s instructions to use medication, such as risperidone, aripiprazole, etc., but there is a lack of targeted drugs.