Present review gives a brief explanation about Breast Cancer, its causes, factors that cause breast cancer, diagnosis, treatment, etc. A brief description of Cancer, and its types is also mentioned in this paper. Breast cancer is the most common female cancer in the world, Breast cancer incidence is rising all over the world, at different rates. Worldwide, breast cancer is ranked second in terms of incidence after lung cancer. This review emphasizes the use of nanocarriers which can be used as targeted drug delivery system .Brief information about micelles is mentioned in this review paper.