Gastric cancer T1aN0M0 hypofractionated belongs to the early stage of poorly differentiated gastric cancer, which can be eradicated by surgery in terms of treatment. Gastric cancer T1aN0M0 indicates that the lesion is only confined to the mucous layer or submucous layer of the stomach, with no lymph node metastasis or distant metastasis, which belongs to the early stage of gastric cancer, so it can be eradicated by surgery. Hypofractionated gastric cancer indicates that the cancer cells are less differentiated and more malignant, and the cancer cells are more invasive, but since it is still an early-stage lesion, it can still be treated. Gastric cancer T1aN0M0 hypo-differentiated can be treated by surgical resection, and there are endoscopic surgery, laparoscopic surgery and open surgery, etc. The specific surgical methods need to be determined by doctors according to the patient’s condition, and some patients may need to undergo radiotherapy after the surgery to avoid recurrence. If patients are diagnosed with gastric cancer T1aN0M0 hypofractionated, please follow the doctor’s instruction for treatment.