Clinical Randomized Controlled Study of Moxibustion Treatment on Superficial Gastritis

INTERVENTION: Moxibustion above the ginger 30 min:moxibustion with moxa cone;Moxibustion above the ginger 15 min:moxibustion with moxa cone;warming moxibustion 15 min:moxibustion with moxa roll;warming moxibustion 30 min:moxibustion with moxa roll;Drug control group:Ranitidine p.o; CONDITION: Superficial gastritis PRIMARY OUTCOME: Symptom score;Detection of gastrointestinal hormones;Gastroscopy test; SECONDARY OUTCOME: Ultrasonic Testing;Helicobacter pylori detection;Health‐related quality of life score; INCLUSION CRITERIA: 1. to be diagnosed as Chronic superficial gastritis; 2. to be diagnosed as pi‐wei‐xu‐han type by TCM Syndrome Differentiation; 3. to sign an Informed Consent Form.