Diabetes Mellitus is the chronic desease that one of the leading cause of illness in Thailand and gradually increasing. This desease effects to life in dimention of body, mild, society and economy. Hypoglycemia is the emergency complication that may be cause of death and more Diabetes Mellitus patient were admitted to the hospital from this complication. Nurses have strong role in treating, recovering and helping patient from crisis period. Thus appropriate nursing is direct activity for maintaining patients‘ health, quality of life and reducing disease severity. This case study is about Nursing Care of Hypoglycemia Diabetes Mellitus Patient. The result found that severity of symptom was reduced. Patient was safety discharge and refer to continued nursing at home.