Early symptoms of cardia cancer are atypical and vary from person to person, commonly including foreign body sensation when swallowing, retrosternal pain, vomiting blood or black stool. Cardia cancer mainly occurs in the junction of lower esophagus and stomach, early symptoms are atypical, some patients may not have clinical symptoms, some patients may have foreign body sensation when swallowing, feeling that it is difficult to swallow food, and with the progress of the disease, the difficulty in swallowing can be aggravated gradually; they may have retrosternal pain; and some of them may have vomiting of blood or black stools. If the above symptoms occur or cardia cancer is suspected, patients should go to the hospital as soon as possible for gastroscopy biopsy or exfoliative cytology, so as to clarify the nature of the lesion as soon as possible, make early diagnosis and early treatment, and prevent delaying the condition.