Lung hilar enlargement is an imaging manifestation that can be caused by a variety of respiratory diseases, and patients may exhibit a variety of symptoms, such as cough, sputum, wheezing, chest pain, hemoptysis, and fever. Lung hilar enlargement refers to the increase of hilar shadow on lung X-ray, which can be caused by chronic bronchitis, hilar lymph node tuberculosis, malignant lymphoma, pulmonary stasis, bronchopulmonary carcinoma and other diseases, and patients with different etiologies may show different symptoms. The main symptoms of chronic bronchitis are coughing, coughing up sputum, accompanied by wheezing or shortness of breath in some patients; patients with hilar lymph node tuberculosis may have symptoms such as prolonged low-grade fever, mild cough, hemoptysis, fatigue, night sweating, and so on; patients with malignant lymphoma may have symptoms such as chest pain, coughing, chest tightness, and respiratory difficulties. Patients with pulmonary stasis mainly manifest various types of dyspnea, and when acute pulmonary edema occurs, they may also manifest cyanosis, coughing, coughing pink foamy sputum, etc. Patients with malignant lymphoma may have chest pain, cough, chest tightness, dyspnea and other symptoms. Patients with bronchial lung cancer may have symptoms such as cough, wheezing, hemoptysis, chest tightness, shortness of breath, fever, emaciation, chest pain and so on. Patients with enlarged lung hilums are advised to seek medical treatment in time, identify the cause of the disease under the guidance of doctors, and carry out appropriate treatment if necessary.