Diabetes mellitus is a metabolic disease characterized by high blood sugar levels due to lack of insulin secretion, impaired insulin secretion or both. Complications due to diabetes mellitus include heart disease, stroke, erectile dysfunction, kidney failure, and damage to the nervous system. One of the non-pharmacological efforts to treat diabetes mellitus is foot soak therapy in warm water. Soak feet with warm water has several benefits including increasing blood circulation, increasing muscle relaxation, and increasing capillary permeability. This application uses the case study method. To understand and apply warm water foot baths to prevent complications in patients with diabetes mellitus. The method of compiling this Scientific Paper by conducting direct observations and interviews. Of this technique was carried out for three days, this study was carried out once a day for 15 minutes. The results of the warm water foot soak application show that there is an influence between soaking the feet with warm water on increasing blood circulation. From these results it can be said that blood circulation increases after soaking the feet in warm water
