In the field of communication network devices, development trend of high-speed system has brought about higher requirement to electrical performance of PCB material. Meanwhile, in order to increase price competitiveness of electronic products, more considerations have to be taken in terms of cost control of material. How to select material that both meets electrical performance and features price competitiveness has become the common concern for PCB designers in the field of communication network. PCBCart is a China-based high-quality PCB manufacturer providing different kinds of PCBs with different material, specializing in professional selection of suitable material catering to requirement of high electrical performance and low cost. This article mainly discusses steps and method of PCB material selection including Dk/Df test and identification, hybrid application of copper foil roughness, signal integrity simulation and test. Furthermore, in the process of material selection, prices comparison between materials with different levels and material comparison between those with the same level are analyzed to reduce PCB cost.