Determining that the pleural fluid has been pumped out can be determined by reviewing the results of the CT lungs and based on the patient’s symptoms. Determining that the pleural fluid has been pumped out can be determined by reviewing the results of the CT lungs, which will show a sharp rib-diaphragm angle if there is very little fluid in the pleural cavity. When there is a small amount of fluid in the pleural cavity, the patient’s lungs will appear as a curved, white, cloudy shadow, and if there is a large amount of fluid in the pleural cavity, it will cause the entire lung to be compressed. Judging that the pleural fluid has been pumped out can be judged from the symptoms. When the pleural fluid is pumped out, pleural reaction will occur, and there will be coughing, chest tightness, shortness of breath, dizziness, panic, pallor and other symptoms, and after the fluid is pumped out the lung tissues will be reexpanded, and the lung’s insufficiency of distension will be completely alleviated, which will result in the feeling of chest tightness being significantly reduced. Therefore, to determine whether the fluid in the chest cavity has been pumped out needs to be evaluated by a professional examination, and it is recommended to consult a specialist.