Abstract: In the touch interaction,fingers slide on the touch screen,could be considered as an common operating mode in touch interaction.However,due to the limit of human finger property,such as biological,physical and other reasons,inevitably finger block or jitter will happen resulting in the formation of the error when the sliding action along a certain direction.In this study,we through an experiment that a based on Steering Law design idea to extend the tunnel slide in different directions to further understand the basic behavioral properties of the finger touch sliding.The experimental results show that users in different directions of the sliding process are obvious difference.When users do the experiments of the tunnel through in the 0°direction,they can get a better feedback and get a higher success rate compared to other directions.It is difficult to achieve customer satisfaction effect while “Tunnel” in the direction of 120°through the experiment,and therefore do not recommend design options in the UI design.The experiment results also pointed out that sliding along a direction with width less than 14px is difficult to get a more satisfactory user experience.The study is basic research in the touch technology,while the touch interaction and gesture design have obvious value.