The purpose of this study was to identify the effectiveness of giving aloe vera boiled water to decrease blood sugar levels in type II Diabetes Mellitus patients at Batunyala Community Health Center, Central Praya District, Central Lombok Regency, NTB. The research design used in this study is a quasi-experimental design pre and post with control group. Respondents were patients who had been treated at Batunyala Health Center, Praya Tengah District, Central Lombok Regency, NTB and diagnosed with type II diabetes mellitus. The total sample in this study was 22 samples with 11 respondents in the intervention group and 11 respondents in the control group using porposivesampling technique. The results of the Dependent t test in getting the results of the average blood sugar level before intervention was 178.73 and after the intervention was 172.18 with an average decrease of 2.258. The results of the Dependent T test obtained P value (0.016) <(0.05) and t count (2.899)> t table (1,812) then Ho was rejected meaning that there were differences in blood sugar levels before and after the intervention giving aloe vera water. Key words : Aloe Vera, Blood Sugar Levels, Type II Diabetes Mellitus