The visual search has been one of the most prevailing paradigms in the modern attention research. In this article, I tried to review behavioral and event-related potential (ERP) studies on visual search. It has been proved that the ERP indices such as P3b, search—related negativity, NA, and so on could reflect various aspects of human information processing, which would not be achieved only by behavioral reaction time measure. The advantages and the direction of future ERP studies on visual search were discussed.