This Training System is designed to aid the students in understanding the concepts and principles of X-Ray Mammography Trainer. Mammography is specialized medical imaging that uses a low-dose xray system to see inside the breasts. A mammography exam, called a mammogram, aids in the early detection and diagnosis of breast diseases in women. X-Ray Mammography Trainer adopted the molybdenum (Mo) target x-ray tube, is special applied to taking mammograms for the good of making the mastosis and mastocarcinoma diagnoses. The trainer is designed to demonstrate the operation, theory, repair and servicing of X-Ray Mammography equipment that used at clinics & hospitals. The unit given the fault diagnosis so as to facilitate the teaching of trouble shooting techniques. A fault simulator is provided with circuit block diagram of the device for the students to study theoretically and experimentally in order to understand the operation of the device.