Background-Diabetes Mellitus (DM) is often called the great imitator because this disease can affect all body organs such as the brain (stroke), kidney (kidney failure), heart, eyes, feet (diabetic gangrene). Symptoms of DM can occur slowly so that the patient is not aware of any changes in him such as drinking more (polidipsi), urinating more often (polyuri), eating more (polifagi) or losing weight without a clear cause. Uncontrolled diabetes mellitus will increase the progressiveness of various chronic complications, both microangiopathy and macroangiopathy.Purpose - This KTI aims at family nursing care in patients with diabetes mellitus with a focus on studies of diabetic ulcer wound care in the work area of Brangsong I Health Center, Brangsong District, Kendal Regency.Method -The draft compilation of scientific papers uses descriptive designs, namely writing methods that aim to describe the events or phenomena that exist at this time. Then this case study is a study to explore diabetes mellitus patients with a focus on studies of diabetic ulcer wound care in the work area of Brangsong I Health Center, Brangsong District, Kendal Regency 2 respondents.Results- Data from the results of the study indicate that Ny. P and Mrs. M said the presence of a DM ulcer wound in the foot. Nursing diagnoses that appear Ny. P and Mrs. M is a disorder of skin integrity associated with the inability of families to care for family members with DM. The planning was focused on Mrs. P and Mrs. M is doing wound care with sterile principles. Nursing actions are carried out based on the plan prepared, focused on the treatment of DM ulcers with sterile principles. Evaluation showed skin integrity disorders and odor in DM ulcers was reduced.