This chapter covers the overview, structure and principle, general design, main systems and parts, and technical standards and performance tests of barrel trucks. First, it introduces the barrel truck as an efficient special vehicle used for distributing empty waste barrels, recovering full barrels, and transferring them to waste stations for centralized treatment and discusses its functions, features, classification, use, and development trends. Second, the structure and working principle of barrel trucks are described. Third, the overall design is presented, including main parameters such as loading capacity, vehicle size, rated load mass, maximum lifting mass of the tail plate, and chassis selection. Fourth, the main systems and parts are detailed, including the tank and cover device, tail plate mechanism, hydraulic system, and control system. Finally, the chapter discusses technical standards, professional performance tests, vehicle and tail plate inspections, and technology parameter selection for barrel trucks.