Abstract
Toward an intelligent delivery robot, the most important task for the robot is to find the receiver out under real-life environments. Especially under a complex environment, the work becomes more challengeable. This paper presents a searching method based on efficient interaction with a possible receiver. Let the robot monitor the environment first and call out the receiver. By making full use of the responding time by the receiver, the robot can get the changing information in the environment. The robot can locate the receiver after analyzing the changed audiovisual information.