The rapid development of the mobile market has made it possible to search using mobile regardless of time and place. Images can be searched through the mobile camera lens anytime, anywhere, and not only search for saved images, but also real-time search by camera. However, currently, researches on mobile search services are being actively conducted, while studies on mobile camera search are inadequate. This study grasps the purpose of mobile camera retrieval, usage behavior and inconvenience from the point of view of actual users. For this purpose, the purpose of mobile camera search was redefined and the search objectives and behaviors were identified through user interviews and participation observations. Also, after grasping the user's needs for camera search, a solution is presented. After that, we tried to improve the user experience on mobile camera search by verifying the effectiveness through usability test. As a result of research, the purpose of mobile camera search is mainly divided into information search, URL search, download search, and entertainment search. The main search targets using mobile camera search are people, language, clothing, flora and fauna, similar images, wine, electronics, and food. Participation observations are uncomfortable because: 1) the search results are provided without a set of criteria; 2) some of the results cannot be compared quickly and easily; 4) If the image is blurred, it is necessary to repeat the shooting process. To solve this problem, we present a) filtering and comparison function, b) related information function, and c) simple image correction function. The usability test of the proposed service was conducted, and face-to-face interviews showed that the serviceability was positive. In this study, we understand the purpose and behavior of mobile camera retrieval service users and suggest ways to improve mobile camera retrieval services.