Abstract: Pressure keeping technique in gas hydrate sampling is matured, but the technique for post-treatment of samples under pressure remains unsolved. The post treatment will affect the initial presence of hydrates in sediments. Abrupt changes in pressure and temperature will cause the release of hydrate from the sediment and influence the results of later treatment. The technique for transportation of pressured samples and post treatment, which includes the acquisition, testing, and treatment of gas hydrate samples, is not only the requirement of gas hydrate resources exploration, but also the mark of the maturity of the gas hydrate resource exploration technology. In this article, we made a design of the technology system for transportation and post treatment of gas hydrate samples under its original status. It includes the pressure-keeping transportation system and an online detection and analysis system.