Hard lump in abdomen two years after gastric cancer surgery may be related to recurrence of gastric cancer and formation of lump by scar repair. The hard lump in abdomen found two years after stomach cancer surgery may be caused by recurrence of stomach cancer, infiltration and metastasis to surrounding tissues or lymphatic metastasis. Commonly, it is because stomach cancer has metastasized to the intestinal tract, which leads to local narrowing, resulting in abdominal cramps, abdominal hard lump, nausea and vomiting and other symptoms. Two years after stomach cancer surgery, hard lumps are found in the abdomen. It may also be caused by the formation of mass during scar repair, which is a scar mass formed due to the proliferation of local fibrous tissues, and can be removed by another surgery if it affects the function of digestive tract or obvious discomfort. Therefore, patients with hard lumps in abdomen two years after stomach cancer surgery should go to hospital in time, improve the examination and follow the doctor’s instruction for standardized treatment after clear diagnosis.