The aim of this paper is to clarify the overview of past researches related to Service Design (SD). As an initial step to achieve this purpose, we exploratory surveyed papers that widely reviews past and current SD research. We selected the papers through the Web search using Google Scholar. On the basis of this survey, we found five academic areas that strongly influenced current SD research, such as (1) Service Marketing / Management, (2) Interaction Design, (3) Design Theory / Design Thinking, (4) Engineering Design / Service Engineering, and (5) Participatory Design / CoDesign. For each of these academic areas, we additionally surveyed specific past researches related to current SD. The papers or books investigated in this additional survey include those selected based on the results of the first survey, as well as those newly found during the process of the additional survey. As a result, we depicted a historical map of SD research. From the map, we found that, among the five academic areas that influenced SD research, some areas have been mutually affected from the past, while others have had little direct involvement so far. Based on the map, we discuss the direction of future collaborations among various approaches to SD research. Further, we also noted that the map can be used as “boundary object” to make the discussion between the research communities with low relationships more constructive, because it explains the background theory in different research communities.