The purpose of this study is to analyze trends of international single subject research related to switch utilization for people with disabilities. Among research papers published in the international journals from 2009 to May 2020, 32 papers were selected for analysis. This study analyzed the research trends by the year of publication, published journals, study subject, study design, independent variable and dependent variable. The results of the study were as follows. First, in terms of the year of publication and published journals, most of the papers were published in Research in Developmental Disabilities and the research has been carried out steadily since 2008. Secondly, in the number of study subjects, 3 studies were the most frequent with 11 studies (34.4%), and in terms of the age of the study subjects, adults (age 19 and older) were 20 studies (62.5%). Third, in terms of research design, ABAB design and multi-baseline design were the most with 12 (37.5%) each. Fourth, in terms of independent variables, types of switches were optic microswitch 18 papers (56.3%) and pressure microswitch 10 papers (31.3%). These switches were used in connection with the body parts of the subjects chin, forehead, neck, shoulder, and foot (15 papers, 46.9%), mobility orthosis such as wheelchairs and walkers (14 papers, 43.8%), computers (10 papers, 31.2%), and VOCA devices (2 papers, 6.3%). In terms of the dependent variable, studies for obtaining preference stimuli or selecting preference stimuli by activating a switch or VOCA device were the most with 21 papers(65.6%). Therefore, there is a need to continuously conduct research to analyze the learning effects of people with disabilities by interacting with the environment through minimal movements of people with severe disabilities using various switches in Korea, and connecting the switches to computers and internet.