In order to go along the work of next generation network protocol conformance testing effectively and thorough, we bring forward a sign idea about test executing system and implement it base on Linux environment, which is obtained based ISO' criterion and method. The main function of test executing system is to execute automatically the test suit in TTCN form in course of protocol conformance testing and present the testing report in the end. In this paper,we first introduce the realization Idea of test executing system base on Linux environment and some interrelated arithmetic. We emphasize on the sign flow and implement procedure of test executing system and discuss some arithmetic for central module. Finally, we give test procedure and test result for IPv6 protocol using this test executing system.