The purpose of this article was to provide basic knowledge and treatment principles of patient with lymphedema, which was usually not treated at all, or the treatment given didn't work efficiently. Lmphedema is defined as an abnormal accumulation of protein-rich fluid, edema, and chronic inflammation within an extremity. Lmphedema may be classified as either primary results from defects with aplasia, hypoplasia, and hyperplasia in the lymphatic system at birth or secondary is caused by known precipitating factors such as cancer, infection, inflammation, radiation, surgery, or trauma etc. There are essentially several conservative treatment methods which has been utilized successfully to treat lymphedema in Samsung Medical Center. We used following procedures: CPT (Complex Physical therapy) or CDP (Complex Decongesitive Physical therapy) such as skin care, MLD (Manual Lymph Drainage), compression with short-stretch bandage, exercise, elevation, elastic stocking, and pneumatic compression. Our experiences shows that conservative treatments can significantly reduce lymphedema and prevent different complications.