It is possible for pleurisy to cause fluid in the lungs, and when this symptom is present it is a serious condition. Pleurisy is mainly divided into dry pleurisy and exudative pleurisy, where exudative pleurisy is also known as pleural effusion. When exudative pleurisy is more serious, it can cause fluid in the lungs, and when there is a large amount of fluid, the patient will experience chest pain, chest tightness, and dyspnea. Pleurisy with pulmonary effusion is a serious lesion, not only will cause various serious damage to the lungs, but also affect the patient’s daily breathing, exercise and other aspects, so this serious lesion is the need for timely surgery and drug treatment. Pleurisy patients should pay attention to regulate their own diet in their normal life, can eat more nutritious food, and recommend that patients seek medical attention in time to clarify the cause of the disease and follow the doctor’s instructions for treatment.