Taking a piece of biopsy for gastric sinus erosion does not mean whether it is serious or not. During gastroscopy, if an ulcer or erosion is found, a piece of tissue is routinely taken for biopsy so that the nature of the disease can be determined, cancer can be ruled out, treatment can be helped, and diagnostic errors can be avoided. Simple gastric sinus erosion is not serious. Gastric sinus erosion is a process of gastritis development, which is related to excessive gastric acid secretion, and may also be caused by Helicobacter pylori infection or unhealthy eating habits. Gastroscopy will find that the gastric mucosa has congestion, edema, found that the doctor will routinely take a piece of biopsy tissue to do pathological examination, if there is malignant changes, it is very serious. If the examination found that there are gastric sinus erosion, according to the cause of timely treatment. If there is Helicobacter pylori infection, it is necessary to take triple or quadruple drugs for treatment in time. If there are unhealthy eating habits, such as frequent alcohol abuse, like to eat spicy and stimulating food, irregular diet, etc., to change these bad habits, you can take some gastric mucosa protector symptomatic treatment.