A mode of process/thread communication between QNX and WINDOWS operating systems in isomerous computers is described. It is proved in practice to be an entirely feasible mode with high efficiency and reliability. A socket created by Socket API is used to communicate between two operating systems. A mode of process / thread communication between QNX and WINDOWS operating systems in isomerous computers is described. It is proved in practice to be able to provide energy feasible with high efficiency and reliability. A socket created by Socket API is used to communicate between two operating systems .