Objective: To investigate the screening effect of pepsinogenⅠ (PGⅠ) and epsinogenⅡ(PGⅡ) detection on gastric ulcer patients. Methods: 2052 physical examination population and 120 gastric ulcer patients were selected for PGⅠand PGⅡ detection in XXX hospital,from January 2011 to October 2011. Results: Serum PGⅠ, PGⅡ, and PGⅠ/PGⅡ in physical examination population were 316.7±129.2ng/ml, 40.2±30.1ng/ml, and 12.0±4.9, respectively. Each was significantly higher than those in gastric ulcer patients (156.0±63.8ng/ml, 5.9±11.1ng/ml, and 9.7±4.3,respectively.)(P<0.05). If PGⅠ<270.9 ng/ml as a reference, Positive expectations to gastric ulcer was 61.7%; PGⅡ<37.8ng/ml as a reference, Positive expectations to gastric ulcer was 55.8%; PGⅠ/PGⅡ<14.4 as a reference, Positive expectations to gastric ulcer was 13.3%. Conclusion: Serum PGⅠ and PGⅡ in gastric ulcers was significantly higher than those in physical examination population. Therefore, they may be useful in screening of gastric ulcer patients in large populations.