Abstract: In view of the difficulties of chip breaking and easy bond in the process of oxygen-free copper deep hole drilling, the chip morphology changes in the process of oxygen-free copper deep hole drilling were studied by combining simulation analysis and experimental research. Based on ABAQUS software, the process of anaerobic copper deep hole drilling was simulated, and the effect of the combination of feed rate and speed on chip morphology was analyzed, and the experimental study was carried out. The results show that when the speed is 255 r/min and the feed is 0.07 mm/r, short chip can be obtained and smooth chip removal can be achieved. The research of this paper provides a certain reference for the selection of machining parameters for deep hole drilling of easy cutting and hard chip cutting materials.