Esophageal malignant tumor develops relatively quickly. Early detection of esophageal malignant tumor suggests surgical removal as soon as possible to avoid deterioration of the condition. Esophageal malignant tumor grows faster, it can grow rapidly in months, weeks or even days, it is invasive, it can invade its surrounding tissues as well as distant tissues, destroying normal tissues and organs, leading to dysfunction of other organs, and it even invades blood vessels and lymphatic vessels and metastasizes to distant organs. Early esophageal cancer can be detected by gastroscopy screening and treated by surgical resection. After the disease has progressed, patients may experience obstruction and friction in eating and may have difficulty in eating, and then CT examination is needed to evaluate whether the patient can be treated by surgery or not. Patients who have detected malignant tumors in the esophagus are advised to ask their doctors for prompt treatment under their doctor’s guidance.