Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder characterized by a deficit in social communication, as well as restricted interests and repetitive behaviours. Various misconceptions about ASD management are rising, leading to parent's confusion and suffering and possible serious harm to ASD patients. This review aims to shed light on common misconceptions about ASD management, including the relationship between ASD and vaccines, the use of chelation therapy, hyperbaric oxygen therapy and gluten-free diet. In conclusion, there is no evidence of a link between vaccinations and the development of ASD, as well as no evidence to support using chelation therapy, hyperbaric oxygen therapy and a gluten-free diet, but rather there is evidence of harm. Educating parents to weigh the benefits and risks is a vital role for any health care provider.