In Japan, support for siblings of children with disabilities has been conducted since 1963, but even now it is not fully developed. Therefore, we conducted a family QOL assessment (Japanese version of the FQOL Scale) for families with and without siblings with autism spectrum disorder, which is considered to cause difficulties in the family situation, and compared them. Then, interview items were created for the items that showed differences among them, and interviews were conducted with four families with ASD compatriots, and the results were analyzed by SCAT (Otani, 2019). The results suggested the need for “Consideration to separate siblings and compatriots”, “Support for siblings to go out”, “Support for home visits by supporters”, “Support for siblings to understand their ASD peers”, “Support for ASD peers to understand their siblings”, “Support for siblings to avoid negative experiences of being in the same school”, “Promote understanding of siblings in schools”, “Promote understanding of various disabilities in schools”, “A place for peer counseling between siblings”, and “Support that respects the identity of each sibling”.