Abstract: Convex hull is an effective tool to construct other geometric shapes.Privacy-preserving protocol for finding the convex hulls is a special case of secure multi-party computation problem.Based on some basic protocols of security multi-party computation，the paper designed a privacy-preserving protocol for finding the convex hulls to resolve the convex hull problem，it also discussed and analyzed the security and correctness of the protocol.

摘要： 凸包问题是构造其他几何形体的有效工具。保护私有信息的凸包求解问题是一个特殊的安全多方计算问题。基于安全多方计算的基础协议，设计了一个保护私有信息的凸包求解协议，解决了基于隐私保护的凸包求解问题，并讨论和分析了其安全性和正确性。