The purpose of this research is to understand the sibling relationship and how they think about disability in the process of growing up in a family with special need. There are two objects: 1. The opinions to each other between siblings. 2. The comments toward "disability" from the special-siblings. The data of this research is collected via in-depth interviews. There are 8 interviewees in the research, including 4 disables and 4 special-siblings. It's our findings that in the cases of siblings, the way they see and interact with each other shows that the disability can possibly be a bridging character in communications. The discoveries can be sorted into four domains, including which is mentioned above, and the others are: recognition of disabled siblings, the switching sequence of siblings and the un-spoken secrets between them. As for "disability" itself, the process it shows up and the way how the siblings face are discussed in this research. Finally, these findings are discussed and the research provides several suggestions.