Since the IC circuit linewidth has reached a level less than ten nanometers, the integration and encapsulation of these IC components must adopt shorter interconnection to reduce the delay resulted from the resistance and capacitance effects and reach its best performance. As the popularity of wearable mobile devices is growing, in order to meet the needs of smaller electronic products, lower power consumption and better performance, advanced packaging processes such as 3D / 2.5D IC package has been progressing rapidly in recent years and has become new trends in packaging. This paper will focus on precision positioning technology required in advanced packaging process, mainly in the chip stacking areas.