Abstract: Vibratory submerged arc welding is a new welding process to improve welding quality by applying vibration on plate.The test of thick plate welding using vibratory welding of valve in west-to-east gas pipeline project was introduced,and then normal welding was compared with vibratory submerged arc welding in residual stress,distortion and microstrucfures.The results of test showed that vibratory submerged arc welding can reduce residual stress and distortion notably and make the grains fine.