High blood glucose levels often appear after a person is over 45 years old in those who are overweight because their body has decreased sensitivity to insulin. Glucose levels that are not appropriately controlled for an extended period can lead to complications in the heart, brain blood vessels, leg blood vessels, nerves, kidneys and eyes. One of the physical activities that can reduce blood glucose levels is exercise. The study aimed to determine the effect of diabetes exercises on blood glucose levels in the elderly at risk of DM. The research design used a quasi-experimental with one group pretest and post-test to determine the effect of diabetes exercises on blood glucose levels and exercise on diabetes three times a week within four weeks. Exercises were done every two days with a duration of 30 minutes. Blood glucose levels were measured before and after the intervention of diabetes exercise. The measuring instrument used to assess blood glucose levels is a glucometer. The result of the Wilcoxon test was (p= 0.000), which means that exercise affects the blood glucose level of the elderly. Diabetic exercise for four weeks showed a significant decrease in blood glucose levels.