Abstract: Aiming at the weak ability of pen input and the low precision of touch input,this paper puts forward the integration strategies of pen interaction and touch interaction and designs pen+touch input technologies.First,the characteristics and advantages of touch input and pen input were qualitatively investigated and two integration strategies of pen+touch input were proposed.Second,three pen+touch input technologies and pen-only and touch-only input technologies for reference were designed.Third,their performances were explored through three experiments.The experimental results showed that the performance of pen+uni-finger touch,pen+multi-finger touch and pen+touch gesture were improved at least 90.909%,80.165%and 148.209%respectively compared with the performance of pen-only or touch-only in color-change straight-line trajectory tasks.The task completion time of pen+touch and pen+gesture were 16.552%and 19.705%less than that of pen-only respectively in color-thickness-change circular trajectory tasks,and there was no significant difference in error rate.The general indexes of pen+uni-finger touch,pen+multi-finger touch and pen+touch gesture were 5.933,3.333 and 4.700,respectively in color-thickness-change drawing tasks.Finally,the interactive design suggestions,application scenarios and improvement ideas for pen+touch input were given,which provide guidelines for pen+touch interactive technique and interface design.