Pneumonia caused by patients with esophageal cancer after immunotherapy is generally more dangerous, but if patients actively take treatment measures, their prognosis is better and less dangerous. Pneumonia caused by immunotherapy in patients with esophageal cancer may be caused by low immunity leading to invasion of pathogens into the lungs. Such situation, if not taken timely, may lead to the development of the disease into lung abscess, sepsis and other diseases, which will seriously jeopardize the health and is a more serious situation. Once the diagnosis of pneumonia is confirmed, for bacterial infections, patients can take oral antibiotics under the guidance of the doctor, such as amoxicillin, azithromycin, erythromycin, levofloxacin and so on. For viral infections, patients can take oral antiviral drugs such as ganciclovir and oseltamivir. Most of the patients can relieve the symptoms of lung inflammation after standardized drug treatment, thus improving the prognosis and survival quality. If patients with esophageal cancer develop pneumonia, they should cooperate with doctors to take treatment measures in time so as to avoid delaying the condition. In daily life, it is necessary to ensure sufficient rest time and do not overwork. I do not understand the meaning of the audit, the core focus of the question is dangerous or not dangerous