Recently, as interest in social robots to support physical convenience and emotional sympathy has increased, and social internet has developed, a social robot has evolved as various services simply beyond robot function. Therefore, to develop a social robot service effectively, it is required to study the functional application and methods of interaction between user and social robot service. The purpose of this study is to classify social robot services and to suggest the types of elements that need to be considered in service development. To do this, we conducted in-depth case studies and analysis based on the theoretical Received(May 27, 2018), Review Result(June 5, 2018), Accepted(July 13, 2018), Published(August 31, 2018) (Strudent) 06978 Global School of Media, Soongsil Univ., 369 Sangdo-ro, Dongjak-gu, Seoul, Korea email: imlimi888@soongsil.ac.kr (Strudent) 06978 Global School of Media, Soongsil Univ., 369 Sangdo-ro, Dongjak-gu, Seoul, Korea email: jeongminji@soongsil.ac.kr (Strudent) 06978 Dept. Digital Media, Soongsil Univ., 369 Sangdo-ro, Dongjak-gu, Seoul, Korea email: choiwinner@soongsil.ac.kr (Professor, Corresponding Author) 06978 Global School of Media, Soongsil Univ., 369 Sangdo-ro, Dongjak-gu, Seoul, Korea email: jaewan.park@ssu.ac.kr *이 논문은 2017년도 정부(교육부)의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업임(No. NRF2017R1D1A1B03035626) Considerable Factors According to Classification of Social Robot Services Copyright c 2018 HSST 884 definitions and characteristics of social robots. Then, based on the sympathy and functions, we classified social robot services into 1) emotional support type, 2) companion type, 3) guide type, and 4) life support type. In addition, in this study, we derive the considerable factors according to the classified types for the development of effective social robot services. This study will contribute to the understanding and development of various services using a social robot.