Tumor is the body in a variety of carcinogenic factors, the local tissue of the cell gene mutations leading to abnormal proliferation and the formation of a new biological loss of contact inhibition. Often expressed as a local tumor. Tumor cells have abnormal morphology, metabolism and function. It grows strong, often in a sustained growth. According to the extent of the tumor to the human body can be divided into two categories: benign tumor and malignant tumor. Cancer is one of the major diseases that affect human health and threaten human life.