The utility model discloses a heat conduction shield assembly for signal surge protector, signal surge protector includes drain pan, panel and locates signal lightning protection PCB in the drain pan,heat conduction shield assembly includes two sheetmetals, two sheetmetal block is respectively located two inside walls of drain pan, signal lightning protection PCB arranges two in between the sheetmetal. The utility model discloses heat conduction shield assembly, the effectively burning that arouses of mutual signal interference of prevention signal lightning protection module and local overheat to effective signal surge protector burning that reduces because of the thunder and lightning is attacked directly or the short -circuit current arcing causes produces the conflagration.