Experiments were performed in 57 SD rats.The stress was induced by bi-nding plus revolving (5.5xg

170c/min

10min) or cold (0～4℃

30～60min).Selected acupuncture points were “Zusanli” and “Weishu”.Bipolar Ag-AgClrecording electrodes were respectively implanted on the serous membrane surfaceof the antrum

duodenum and on the abdominal skin corresponding to aboveareas.The results were as follows:(1) There are 63.2% individuals in thestress group which showed a large quantity of bleeding points spreading over thegastroduodenal mucosal membrane.The area density of lesion was 15.8～27.7%.Under microscope the signs emerged including mucosal blood vessel dilatationand hyperaemia

gland cell swelling

vi(?)lus broken and peeling off and lymph cellaccumulating

etc.84% individuals showed obvious inhibition of gastroduodenalelectroactivities including that the amplitude of slow wave was lower

the frequ-ency decreased even the rhythm was disordered

the number of fast wave redu-ced and the IDMEC (?) cycle was prolonged.(2)In the group of acupunctureplus stress only 16.7% individuals showed bleeding or hyperaemia

and the lesionarea density was only 1.7%.Also the pathohistological changes were obviouslydecreased.Gastroduodenal electrical changes were hardly seen (27.2%) or theinhibitory state above were significanly reduced (54.5%) when compared withthe stress group.There is strong reason to consider that acupuncture couldeffectively reduce the mucosal lesion and the electrical inhibition of stomachand duodenum induced by stress in rats.