The invention discloses a road condition preview method suitable for integrated control of a vehicle chassis. The method is used for carrying out online real-time scanning, estimation and measurementon information such as elevation, slope, inclination, unevenness and the like of a road surface, and comprises the following steps: firstly, realizing elevation information extraction and 2.5 D reconstruction of the road surface in front of a vehicle by installing a plurality of sensors; secondly, designing point cloud motion compensation of timestamp synchronization, establishing feature point matching of a local map and a global map, and then, improving terrain scanning precision; next, realizing map fusion and update by utilizing Kalman filtering; and finally, extracting an elevation data sequence of the terrain grid at the tire, and completing extraction of slope, inclination and unevenness by combining the elevation data sequence and elevation information of the road surface in frontof the vehicle. According to the invention, the adaptability and matching performance of vehicle chassis integrated control to road conditions are improved, the problems of failure, instability and slow updating of GPS signals are solved, and the scanning precision and stability of the terrain in front of the vehicle are improved.