The spread of esophageal cancer mainly causes local compression symptoms such as hoarseness and corresponding symptoms of metastatic sites such as bone pain. 1. Symptoms of local compression: esophageal cancer most often occurs in mediastinal lymph node metastasis, and the enlarged lymph nodes can easily compress the recurrent laryngeal nerve, leading to hoarseness and choking on drinking water, and if compressing the trachea, it will also lead to coughing and dyspnea, etc. Localized infiltration of esophageal cancer may also lead to tracheo-esophageal fistula, resulting in coughing and fever. Local infiltration of esophageal cancer may also lead to tracheo-esophageal fistula, resulting in cough and fever. 2. Symptoms corresponding to metastatic sites: common metastatic organs of esophageal cancer include lungs, liver and bone tissues. When metastasized to lungs, normal respiratory function will be impaired, leading to symptoms such as dyspnea and even bloody pleural fluid, etc. Metastasis to liver will cause symptoms such as abnormal liver function and indigestion, etc. Metastasis to bone tissues will lead to pain and bone fracture in the corresponding parts. Once esophageal cancer patients are diagnosed, it is recommended to consult doctor in time and cooperate with doctor for active treatment to avoid delaying the condition.