The invention provides a multi-temperature-zone air conditioning system, a control method of the multi-temperature-zone air conditioning system and a transportation refrigeration vehicle. The multi-temperature-zone air conditioning system comprises an outdoor unit; a first type indoor unit; and a second type indoor unit; wherein the number of the first-class four-way valves corresponds to the number of the first-class indoor units, and the number of the second-class four-way valves corresponds to the number of the second-class indoor units; the indoor unit further comprises an interval flow path capable of being connected and disconnected, the first type of indoor unit is connected between the first throttling element and the first on-off valve, and the second type of indoor unit is connected between the second throttling element and the second on-off valve. According to the multi-temperature-zone air conditioning system, the first-class indoor unit and the second-class indoor unit which are connected with the outdoor unit are arranged, and the interval flow path is arranged between the first-class indoor unit and the second-class indoor unit, so that intercommunication and interconnection among the first-class indoor unit, the second-class indoor unit and the outdoor unit are achieved; the first type of indoor units and the second type of indoor units are partitioned to realize refrigeration and heating control.

本申请提供一种多温区空气调节系统、其控制方法及运输制冷车辆。该多温区空气调节系统包括：室外单元；第一类室内单元；以及第二类室内单元；其中，第一类四通阀的数量对应于第一类室内单元的数量，且第二类四通阀的数量对应于第二类室内单元的数量；且其中，还包括可通断的区间流路，其在第一节流元件与第一通断阀之间接入第一类室内单元，并在第二节流元件与第二通断阀之间接入第二类室内单元。根据本申请的多温区空气调节系统，通过设置分别与室外单元存在连接关系的第一类室内单元与第二类室内单元，并在二者之间设置区间流路，从而达成三者之间的互通互联，使得对第一类室内单元与第二类室内单元分区实现制冷与制热控制成为可能。