(Abstract: Aiming at the problem that the limited power of mobile devices seriously affects its development, a dynamic program segmentation algorithm in mobile computing environment is proposed. Considering that part of the code of the mobile device is migrated to the resource rich server through the wireless network to save the power consumption of the mobile device, the program object relationship diagram is established and further transformed into the process network; Using the network flow theory, the maximum flow minimum value is adopted. The segmentation algorithm realizes the optimal segmentation of flow network. The experimental results show that the proposed algorithm can not only save power, but also adapt to the changeable environment than the existing algorithm.)