This paper describes a choice strategy to ease user?s burdens for an interactive object recognition system when the system obtains multiple object candidates as a recognition result. First, we propose several methods to display the recognition result so as to make recognition of the candidates easy and hierarchical methods to reduce candidates per choice. We verify their effectiveness by subjective tests. Next, we propose a strategy to minimize time spent for choices. We divide the time into that for displayed candidates and that for speech dialog, and formulate each time to evaluate the strategy quantitatively. Last, we compare the strategy based on choice time with a subjective strategy.