Objective : This study is to confirm the intervention effect of domestic research applying errorless learning training and to confirm the characteristics and quality level of the research. Methods : Errorless learning used search engines of the Research Information Sharing Service (RISS), Korean Studies Information Service System (KISS), DBpia, and Korean Medical Database (KMBASE) for the main keyword, and searched studies published in domestic journals in the last 10 years. Eight studies were analyzed for intervention effects, characteristics, and quality. Results : The study subjects were patients with dementia and mild cognitive impairment, and errorless learning training alone or errorless learning training and spaced retrieval training were applied as independent variables. The dependent variables were recall success rate, memory, concentration, cognitive level, activities of daily living, and depression. Three of the eight studies were group studies and five were single subject studies. The qualitative level of the analysis target was 'normal' for randomized clinical trials; in single-subject studies, there were 3 medium-level studies (60.0%) and 2 high-level studies (40.0%), and there were no low-level studies. Regarding the intervention effect, all studies showed an improvement or increase in dependent variables. Conclusion : All studies on errorless learning training were of moderate to high quality and reliable, and were confirmed to be effective interventions for patients with dementia and cognitive impairment.