The difference between carditis and cardia cancer is mainly reflected in the different pathological nature and treatment modes. 1. Carditis: Inflammatory diseases in cardia area are benign, and gastroscopy often shows congestion, redness and even erosion of mucosa in cardia area, and the treatment is mainly based on medication. 2. Cancer of cardia: Tumor disease in cardia is malignant, gastroscopy often shows unclear boundary, non-smooth surface, unevenness, the center of the lesion can be liquefied and necrotic to form cancerous ulcers, and the bottom of the ulcers is often covered with dirty moss and bleeding local lesions of cancerous lesions, and the treatment is mainly based on surgical treatment. Therefore, no matter which kind of disease, it is suggested that patients should choose to seek medical treatment in time, and be treated actively after scientific examination to avoid aggravation of the condition.