Spoiler assembly, vehicle tail door assembly and vehicle

The utility model discloses a spoiler assembly, a vehicle tail door assembly and a vehicle. The spoiler assembly comprises a spoiler body and a protection mechanism. The spoiler body is used for being connected to a roof of a vehicle body. The protection mechanism is connected to the installation support, and one end of the protection mechanism can move relative to the spoiler body so as to be close to the side, away from the car roof, of the spoiler body and wrap at least part of the end of the spoiler body. By arranging the spoiler body, the metal plate can be shielded, and the aerodynamic force of the vehicle is improved. And moreover, the protection mechanism is arranged to protect the tip end part of the turbulent flow side plate, so that the risk that the turbulent flow side plate collides with the head of the human body is reduced, and the safety performance is improved. 本申请公开了一种扰流板组件、车辆尾门总成及车辆，扰流板组件包括扰流板本体以及防护机构。扰流板本体用于连接至车体的车顶。防护机构连接于安装支架，防护机构的一端能够相对扰流板本体移动，以靠近扰流板本体远离车顶的一侧，并包裹至少部分扰流板本体的端部。通过设置扰流板本体，能