Lung failure symptoms after esophageal cancer surgery may be caused by lung infection and cancer metastasis, which need timely anti-infection and anti-cancer treatment. 1. Lung infection: if the immunity and resistance of esophageal cancer patients are low and they do not have proper anti-infection treatment, lung infection with atelectasis, pneumonia and other problems will cause lung failure, and empirical anti-inflammatory treatment should be carried out according to the relevant symptoms and examination results. 2. Cancer metastasis: metastasis may still occur after esophageal cancer surgery, and once metastasis occurs to the lungs, it will affect the lung function and cause respiratory failure symptoms, and reasonable individualized treatment should be carried out for the metastatic lesions.