Serum values of the Zinc were determinded by atomic absorption/flame spectorometer in 43 normal adult and 55 patients with gastritis who were visited or admitted to Department of Internal Medicine, Han Gang Sacred Heart Hospital from January 1980 to August 1980. The results were as following. 1. Serum values of Zinc in patients with gastritis were 91>27. 29ug/100ml. 2. Serum values of Zinc in patients with Chronic superficial gastritis were significantly decreased. 3. Serum values of Zinc in control group were 89.2 12.9ug/100ml.