Phlegm after esophagogastrectomy, need to consider the mucous membrane secretion of body fluids, caused by the accumulation of phlegm, you can take cough medication for treatment; but also need to consider the phlegm secretion caused by pharyngeal mucous membrane infections, you can take anti-infective drugs for treatment. 1. Excessive mucous membrane secretion: After esophagogastrectomy, the mucous membrane of the pharynx is in a more sensitive state in the short term, so it will be stimulated by the air, food and other foreign objects, which will lead to excessive sputum secretion. For this kind of phlegm accumulation caused by excessive secretion, you can take cough suppressing and phlegm transforming drugs to effectively relieve the phlegm accumulation phenomenon, such as Ambroxol hydrochloride oral solution or Ambroterol oral solution. 2. Infection: After esophagogastrectomy, the patient’s own immune function will be damaged to varying degrees, so it is easy to cause phlegm accumulation or throat discomfort due to local infections during the postoperative recovery period, so it can be targeted treatment by taking anti-infective drugs. Depending on the type of bacterial or viral infection, antibiotics such as ampicillin and cefradine, as well as antiviral drugs such as ribavirin and valacyclovir can be chosen. Surgical patients who develop sputum after surgery should be treated with appropriate medications under the guidance of a doctor.