The present research analyzed 59 experimental analysis studies verifying the effectiveness of interventions for promoting relationships of young children with disabilities and without disabilities in inclusive educational settings. The general characteristics of the studies and their intervention strategies were evaluated to shed light on significant trends. The first, results of the general characteristics of the study: First, the number of such analyses increased from 2001, with 2006 and 2007 the most active years. Second, the studies showed a degree of bias towards use of the single subject research method. Third, in terms of research quality in cases where single-subject design was employed, the average number of repetitions of experimental conditions was 2.9; measurements for maintenance and reliability were relatively sound or generalized; and those for social validity were insufficient. In the case of group studies, many of the dependent variable measurement tool types were non-normalized testing tools, with reliability and validity of the tools somewhat incomplete, while studies verifying the effectiveness of interventions were almost non-existent. The next, the study analyzed trends in intervention strategies. First, many studies conducted interventions on young children with disabilities and those without disabilities together, mainly in peer-group rather than in individual situations and in play settings of integrated classes including both care center and kindergarten level children. Most moderators were researchers or general education teachers, with intervention duration lasting over 1 month but less than 3 months, and intervention time per session 20 minutes or less. Second, intervention strategies were mainly focused on social integration activities, with class-targeted intervention, naturalistic intervention, direct teaching, etc. all used evenly without discrepancy, and interventions in all studies, including four which included partial verifications, were duly analyzed. Third, dependent variable content mainly looked at the social and communication-related skills of children with disabilities and those without disabilities. Based on these results, future directions for intervention studies promoting relationships of young children with disabilities and without disabilities in inclusive educational environments were discussed.