The purpose of this study was to quantitatively evaluate the effect camping on self-concept by using meta-analysis. The results show that the impact of camping on the change in self-concept is smaller for the “Self-Confidence” (d=0.02) and the “Self-Perceived by others” (d=-0.02) relative to the “Achievement Motivation” (d=0.23) and the “Self-Effort” (d=0.27). This suggests that “Achievement Motivation” and the “Self-Effort” factors are more easily impacted than others. This also suggests the possibility that how results appear varies depending on factors such as the timing of the surveys and age level. Through a systematic review, this study quantitatively organized previous studies on camping and clarified the current status and future challenges. Further accumulation of empirical research is required in order to acquire more accurate results.