Although most research related to visual search mainly focused on static visual search, many real-world visual search tasks are dynamic visual search. Williams and Borow (1963) investigated display moving velocity’s effects on search performance[12].Velocities selected in their experiments ranged from 0/s to 32/s. It was revealed that the cumulative detection probability could be fitted with exponential curve. When moving velocity was below 8 / s , there was no significant difference in time constant. However, Erickson (1964) failed to fit the cumulative detection probability with exponential curve [13]. He only found that search performance decreased as moving velocity increased. Since then, there was little research focusing on dynamic visual search.