ObjectiveTo explore the diagnosis, treatment and prognosis of primary gastric malignant lymphoma(PGML). MethodsThe diagnosis and treatment data of 21 cases of PGML admitted in our hospitalduring 8 years was retrospectively analyzed. The diagnostic methods included barium meal examination, gastroscopy, B type ultrasonography, and CT scan. All patients underwent operative treatment and most of the patients received adjuvant chemotherapy. ResultsUpper abdominal pain, digestive tract bleeding, emaciation and abdominal mass were common clinical manifestations of PGML. The resectabilty rate of PGML was 90.5% while the 5year survival rate was 57.1%. ConclusionsThe key to a satisfactory prognosis was early diagnosis, radical curative operation and combined treatment.