The case control study was the selected study design,to discover the common risk factors of breast cancer among saudi women,the main objectives of our work were to study the risk factors of breast cancer among Saudi women and initiate women's awareness regarding breast cancer. The health awareness was about definition of cancer, risk factors, and methods of prevention; the importance of early detection through monthly self breast examination and periodic examination through mammogram and the importance of early treatment.Health awareness may be help at such level of prevention,as primary, secondary or tertiary prevention,also there are some risk factors can be avoided through increasing the women knowledge and information about the relative and absolute risk factors of breast cancer and its preventive measures.