The deep heavy oil reservoirs in the Tuyuke Oilfield are characterized by complicated structure, poor physical properties and low single well production, so it is difficult to achieve economical and effective development by using conventional mining methods and well-bore technology. The natural gas dissolution and viscosity reducing indoor experiments were tested on the deep heavy oil reservoirs in the Tuyuke Oilfield. The parameters of the design throughput were optimized by the use of numerical simulation and phase equilibrium studies in CEMway of exploitation on natural gas throughput. The gas throughput field tests were carried out on three wells. The results show that with the using of natural gas throughput technology, the daily production of a single well was increased 2～7 times.