In order to discuss the potential application of tactical internet testbed in ad hoc tactical network construction, and provide references to domestic correlative research, this disquisition presents the origin, connotation and main research field of tactical network topology experiments, particularly expounds the signification of tactical network topology testbed, and then introduces two typical testbeds and their applied domain, which is plug-and-play testbed and maritime interdiction operation testbed. On the basis of the research above, the tactical network topology testbed service architecture is analyzed. Finally this paper concludes the contents and research efforts of tactical network research project which is presented by several investigation groups.