—Wireless Mesh Network (WMN) is a promising broadband wireless network architecture. Security is an important component of the WMN architecture but is not fully considered so far. In this paper, we introduce a prototype secure wireless mesh network testbed called SJTU-MESH built by Shanghai Jiao Tong University. The detailed design and implementation of secure WMN nodes are presented, and the construction of the testbed is also introduced. Some testing results and comparison are given to demonstrate the performance of the testbed. Our work provides some useful insights and references for the construction of future business oriented secure wireless mesh networks.