Patients with atrophic gastritis can certainly eat watermelon, as long as it is consumed in small amounts. The diet for atrophic gastritis should primarily consist of easily digestible, clean foods, and avoid spicy and irritating foods, such as salted fish and alcohol intake, etc. Typically, patients with atrophic gastritis seek medical advice due to abdominal discomfort, exhibiting symptoms such as abdominal pain, bloating, nausea, vomiting, and early satiety. A comprehensive gastroscopy indicates inflammatory changes and atrophic alterations of the gastric mucosa. In terms of treatment, apart from dietary management, pharmacological treatment can be selected, including acid-reducing and gastric-protective medications, particularly suitable are traditional Chinese medicines that protect the stomach. It is advisable to supplement some vitamins and avoid spicy and pickled foods. Certainly, for atrophic gastritis, it is important to be cautious of concurrent Helicobacter pylori infection. If Helicobacter pylori infection is considered, anti-Helicobacter pylori treatment is recommended for the patient, followed by regular follow-ups, typically every six months to one year for a gastroscopy examination. (Medication should be used under the guidance of a doctor.)