It is common to clamp the breast horizontally and obliquely, or vertically if the lesion is located on the inside or outside of the breast. When taking a mammogram, you need to use a pallet and a pressurized plate to pressurize the breast to flatten it and make the film clearer. The standard camera positions for mammograms are mainly internal and external oblique orientation (MLO) and cephalocaudal orientation (CC). The internal and external oblique direction is the most important orientation, i.e. “oblique clamping”, the pallet is placed at an angle of 45°, about parallel to the pectoralis major muscle on the side to be examined, and the X-ray passes through the breast tissue from the upper inner part to the lower outer part, so that the maximum range of examination can be made to the breast at the end of the axilla. In the head-to-tail position, i.e., “horizontal clamping”, the pallet is positioned horizontally, and the X-ray passes through the breast from upward to downward during photography. When the lesion is located in an area that is difficult to visualize in the standard position, additional positions can be performed. If the lesion is located in the inner or outer part of the breast, lateral orientation photography can be performed, which is the “”vertical clamping”” of the breast. The position of the molybdenum target examination, as well as the need for additional position or magnification of photography, etc. need to be analyzed in conjunction with the location of the lesion and other specific circumstances, it is recommended that the patient consult a doctor in a timely manner, the examination with the doctor’s instructions.