Heartburn is one of the early manifestations of stomach cancer, but it is not a characteristic symptom of stomach cancer. It is because there are many reasons triggering heartburn, such as eating too fast, mental factors, digestive tract diseases, etc., which can lead to the phenomenon of heartburn. Generally, the symptoms of early stage of stomach cancer are not obvious, and some patients may have upper abdominal discomfort, such as fullness, burning sensation, pain, etc., which appear mostly after eating, often recurring, and the duration of attack is short, and the symptoms are easily mistaken as indigestion or gastritis. For frequent cases of heartburn, patients are advised to undergo gastroscopy to clarify the type of disease. Patients with heartburn should pay attention to avoid eating too fast on a daily basis and try to eat less or no stimulating food, such as strong tea, coffee, fried food, etc. A proper walk can be taken 30 minutes after a meal, which can help digestion and reduce the symptoms of heartburn at the same time.