OBJECTIVE： To optimize the water extraction technology for the medicinal materials in Compound gastritis capsule. METHODS： Orthogonal test was adopted. Using the comprehensive score of contents of paeoniflorin， salvianolic acid B and weight of dry extract as evaluation index， effects of adding water amount， decoction time and times on water extraction technology were investigated， and verification test was conducted. RESULTS： Optimized water extraction technology was as follows as decocting for 3 times， 120 min each time and adding 10-fold water each time. In verification test， average comprehensive score was 909.19 （RSD＝1.84％， n＝3）. CONCLUSIONS： Optimized water extraction technology is stable and feasible， and can be used for the water extraction for each medicinal material in Compound gastritis capsule.