Abstract：The increasing amounts of residual sludge generated by rural wastewater facilities have become a new challenge in rural wastewater management. It is possible for multiple sewage facilities to dewater the residual sludge in rural areas using vehicle-mounted dewatering equipment before transporting the waste for centralized treatment. However， the width and passage height limits of rural roads and the distances between the sewage facilities and roads are the main constraints to this pretreatment process. Therefore， there is an urgent need for the development of small vehicle-mounted residual sludge-dewatering technologies and equipment for rural operations. The vehicle-mounted residual sludge-dewatering technology developed in this study effectively reduces the size of the equipment by operating the main dewatering equipment under negative pressure. The equipment has an external dimension of 5.995 m × 1.905 m × 2.56 m and a suction pipe of 50 m in length. It is adapted to operating environments where the width and passage height limits of rural roads make then impassable by large vehicles and the distances between facilities and roads are far， and it can meet the needs of more than 90% of small rural wastewater treatment facilities. The measured results show that the driving fuel consumption and working fuel consumption of the equipment are 7.2 L·h-1 and 1.88 L·h-1 respectively. The water content of the dewatered sludge is approximately 80%. The simulated case study shows that the dewatering collection method saves 103.3 yuan per year per small facility compared with the direct collection method without dewatering. Therefore， in a rural area with 4400 small wastewater facilities installed， the annual savings in sludge collection and transportation would be 455000 yuan.