Objective:To optimize the processing technology of Hanshuishi and obtain the basic pharmacodynamic parameters. Method: An orthogonal experiment of four factors and three levels was conducted to evaluate the Hanshuishi processing technology, and the characters of calcined products and CaCO3 content were used as observation indexes. The animals were divided into model group, 100 mg·kg-1 Ranitidine group, 360.4 mg·kg-1Jiebai Wan group, 334.3 mg·kg-1the Jiebai Wan removed Hanshuishi group, 26.1 mg·kg-1 henan Hanshuishi, zejiang Hanshuishi and xinjiang Hanshuishi groups, Pylorus-ligated rat model was applied to observe the effect on gastric juice volume, acidity and pH value of the rats subjected to intragastric administration. Result: The processed traits of Hanshuishi were crisp, white color and powder. The optimum conditions of the Hanshuishi were particle size of powder (20 mesh), temperature of 1 000℃, time 1.5 h; In addition to the 13th sample produced in Zhejiang, the other Hanshuishi groups and the Jiebai Wan group removed Hanshuishi could significantly decrease the volume, total acidity and 1 h acid excretion of gastric juice of experimental rats and increase pH value; Except of increasing the pH value, Jiebai Wan group had no effect, The efficacy of henan Hanshuishi was optimal and the Zejiang one had a poor performance. Conclusion: Hanshuishi inhibited gastric secretion of rats; moreover, the efficacy of Hanshuishi from different areas has slightly different.