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This paper presents a novel method to implement an interactive mobile robot. The proposed mobile robot is implemented under the technique of mixed reality. The mixed reality technique is realized by both the Virtools tool and mobile robot. There are three basic interactive behaviors of human beings have been implemented on this proposed mobile robot. There are target navigation behavior, face tracking behavior, and obstacle avoidance behavior; the three behaviors are designed by the fuzzy rules method, respectively. These behaviors lead to the proposed path planning strategy possibly. On the other hand, a novel path planning strategy for a mobile robot is given in this paper. The path planning strategy is according to the experience that the mobile robot has been experienced in target navigation. Experiments show that the proposed behaviors are well designed. With the basic ability of the behaviors, the proposed robot can automatically learn from the previous navigation experience and can optimize the path planning.