Based on highsilicon aluminum alloy nocylinderliner engine block bore materials grinding characteristics, a dualspindle CNC honing machine tool was developed. In the machine tool, twoposition twospindle honing layout was used, it consisted of the following modules: spindle box, column, column glide, workpiece clamping table and so on. Spindle honing dual feed mechanism and honing oilstone double feed body were adopted. A closed loop control system based on motion control card was used. The system hardware platform was IPC and general industrial motion control card, based on the pneumatic differential pressure measuring honing online system, processing volume closedloop control was achieved. The software platform was Windows system, VC++ development tool was used to program specialized processing procedures for the honing process.