Diabetes is a metabolic disorder caused by a lack of the hormone insulin in a person's body. Lack of the hormone insulin in a person's body. Lack of the insulin hormone causes the sugar (glucose) consumed by the body to be imperfect. This situation causes the patient to experience hyperglycemia or excess blood sugar. In diabetes, the condition of excessive blood sugar levels can result in long-term damage, dysfunction and failure of various organs, especially feces, kidneys, nerves, heart and blood vessels. This study aims to determine blood glucose levels before and after the application of foot exercises. With the method of writing in this study using data collection methods, with 2 clients affected by Diabetes Mellitus. The tool used to measure blood glucose is using a glucometer. The results showed that management to overcome instability of blood glucose levels in clients with diabetes mellitus can be done by applying foot exercise techniques. From this study it can be concluded that there are changes in blood glucose in diabetes mellitus clients before and after implementing foot exercises. The application of diabetic foot exercises can be used to improve blood circulation in the legs and prevent swelling and injuries to the feet. Further researchers are advised to increase the number of respondents so that they can reduce blood glucose levels more from this study
 Keywords: Diabetes mellitus, blood glucose levels, foot exercise