Gastric adenocarcinoma moderately differentiated is a pathologic diagnosis of gastric adenocarcinoma, indicating that the gastric adenocarcinoma is moderately differentiated. Cell differentiation refers to the process by which one type of cell proliferates to produce a population of cells with different morphology, structure and physiological functions. The higher the degree of differentiation of cancer cells, the lower the degree of malignancy. Gastric adenocarcinoma can be classified into undifferentiated, poorly differentiated, moderately differentiated and highly differentiated, and moderately differentiated gastric adenocarcinoma is the gastric adenocarcinoma in the middle of the malignant degree. Patients with moderately differentiated gastric adenocarcinoma can choose to undergo surgery to remove the gastric tissues and combining with the perigastric lymph node dissection, and cooperate with the adjuvant chemotherapy according to the situation to control the progression of the disease. After surgery, patients with moderately differentiated gastric adenocarcinoma should receive active treatment in the hospital in time after diagnosis, and follow the doctor’s instruction during the treatment, so as to recover their health as soon as possible.