Pericardial puncture is usually chosen in the bare area of the heart, but it depends on the patient’s condition. The bare area is relatively unobtrusive to other tissues and is less likely to injure parts of the lungs, so it is a more common site for puncture. Most pericardial punctures are performed because there is fluid accumulation and other conditions that may cause the heart’s diastole to be affected. When the heart is not sufficiently diastolic, the amount of return blood is affected and does not enter the heart sufficiently, which will have an effect on the ejection of blood, resulting in a significant decrease in the ejection of blood, which will certainly show a lack of blood supply to the peripheral tissues, which may affect many important organs and cause serious consequences. Therefore, pericardiocentesis is performed primarily for the emergency relief of the above-mentioned conditions. Therefore, ultrasound localization must be performed to clarify the puncture before it is performed.