Introduction: Diabetics still have difficulty doing independent treatment from health information that has been obtained and heard. One aspect that plays an important and effective role in the management of diabetes mellitus is the provision of education in the form of Diabetes Self Management Education (DSME). Objective: Knowing the effect of applying Diabetes Self Management Education (DSME) to the knowledge, attitudes and self efficacy of Type 2 DM patients.Method: The study has a Quasi-Experimental design. The sampling technique uses purposive sampling. The total population consists of 75 respondents, and obtained a sample of 37 respondents. The independent variable is Diabetes Self Management Education (DSME). The dependent variable is knowledge, attitude, and self efficacy. Data taken using a questionnaire. Data were analyzed using Wilcoxon Signed Rank Test and Mann Whitney U rest statistical tests with significance α≤0.005.Result: The results of the statistical analysis of the Wilcoxon rank test were obtained in the pre post test of the treatment group and the control group namely knowledge from (p = 0,000) to (p = 0.317), attitude from (p = 0,000) to (p = 0.046) and self efficacy from (p = 0,000) to (p = 1,000). The Mann Whitney U test statistic obtained p = 0,000 in the treatment and control groups.Conclusion: Diabetes Self Management Education (DSME) can increase knowledge, attitudes, and self efficacy of people with type 2 diabetes. Future researchers are expected to conduct further research to compare the effect of Diabetes Self Management Education (DSME) with booklet media and other media using a control group.