Pericardial effusion can be relieved by sitting in a forward leaning and bending position, but it cannot solve the problem of the effusion itself. The harm of pericardial effusion is mainly caused by cardiac tamponade, which leads to dyspnea and other symptoms, pericardiocentesis is the easiest, fastest and most effective way to relieve cardiac tamponade, for those who have already gone into shock, they should also carry out rehydration, elevation of blood pressure and other emergency treatments; the treatment of pericardial effusion is mainly to find the real causes of pericardial effusion, and to solve the real reasons for the generation of the effusion. When pericardial effusion occurs, it is important to enter the hospital as soon as possible for treatment, and actively cooperate with the doctor to improve the quality of life and prevent a series of serious complications caused by the increase in the amount of effusion.