Prime objective of this article is to discuss Monoclonal Antibodies Treatment for Various Diseases. In monoclonal antibody therapy, specific antibodies are widely-used for binding target healthy proteins or cells. These antibodies are capable to stimulate the defense mechanisms of the patient and therefore destroy harmful elements. Monoclonal antibodies are widely used for the treating various types of malignancies. They are mainly involved in immunotherapy. Monoclonal antibody therapy is quite secure and efficient for certain patients. This treatment is not made for routine clinical setting because it must be tailored to each individual patient.