The left chest rests on the lower medial side mainly on the apical part of the heart, which is covered with multiple layers of structures from the outside to the inside, such as skin, muscle, ribs and heart, and the apical part of the heart can be displaced for some reasons. The apical part of the heart is located in the left midclavicular line, about 0.5 cm to 1 cm medial to the fifth intercostal space, and its outer side is covered with tissues such as diaphragm, ribs, muscles and skin. The apical beat may be displaced for physiologic or pathologic reasons, including changes in body position, obesity, and long, thin bodies. Pathologic causes include cardiac or non-cardiac factors. Cardiac factors include enlargement of the right and left ventricles and right-sidedness of the heart, while non-cardiac factors include displacement of the mediastinum or diaphragm. Any abnormalities in the apical region of the heart should be treated by a doctor.