This article is aimed to research the vibration acceleration signal of agricultural wheeled transporter when working in grassplot， mud road and 15.1° slope of dinas road conditions. And then the vibration acceleration signal was input in the LabVIEW's signal processing model to analyze and extract its feature. At last,through the correlation of vibration displacement signal,which is acquired by twice integral operation based on the vibration acceleration signal,its characteristics were analyzed and extracted. The results of the vibration displacement signal indicating that speed and load weight significantly affect the pavement roughness of grass. The significant value of slope,speed and load weight indicating that slope has the biggest effect on the pavement roughness signal followed by speed and load mass. 