For recent years gas hydrate has discovered in northern part of Southern ocean and in frozen zone of southern fringe of Qilian mountain, in Qinghai province, Tianjun county in China .This new energy source will play an important role for adjusting energy resources structure and relaxing the energy resources tension of China. But, the exploitation of the gas hydrate and its security are serious problem in the World. The Teaching group of geophysics, exploration engineering and oil drilling engineering of South Russian State Technical University has developed a technology and methodology system of safety controlling and measuring. With the system the position of CT perforation part and the blocking up of the part can be determined and what corresponding measures to solve the blocking up should be taken. Therefore the system provides a technical support for safety exploration of gas hydrate.