Professor XIE jingri's clinical experience in treating precancerous lesions of gastric cancer is summarized.It is believed that the disease development of precancerous lesions of gastric cancer is from mild to severe，from shallow to deep，because of the fact causes the virtual，because the virtual sense of evil，showing the state of the intermingled deficiency and excess，based on the weakness of spleen and stomach，deficiency of qi and Yin，stagnation of blood stasis，heat，turbidity and poison as the standard.When professor XIE was treating the disease，he stressed the importance of keeping to the disease mechanism，combining macro and micro，combining Chinese and western medicine，using medicine to ease the pain，using prescription for legislation，attacking and compensating，and taking care of the health.List one test case to illustrate the effect.