With the rapid development of information technology, digital technologies are being increasingly applied in the construction field. High-rise building design confronts issues such as complex structures, difficult construction positioning, high safety risks, and poor information coordination. In this regard, this paper analyzes the applications of BIM technology and wireless sensor positioning technology in the steel-structure design of high-rise buildings. By optimizing algorithms and integrating practical cases, it explores pathways to solve design and construction challenges, aiming to promote the digital transformation of the construction industry and enhance design and construction quality.