The invention discloses a container car mounted tent which comprises a tent frame and a tent fabric, wherein the tent frame has a sloped frame foldable structure, and the tent frame is hinged on a side container door of a container car and attached on the side container door after the side container door is closed; the tent frame comprises a top support, upright columns and inclined bars; the upright columns are connected with one side of the top support and hinged on a side plate of the container car, and the inclined bars is connected with the other side of the top support; and pull ropes arranged on the tent fabric are connected with hooks that are fixed on the ground. The tent frame and the container door are connected to form an integral structure. When in use, the tent is carried by the container car, has strong invisibility and is convenient to use. The invention makes full use of the space of the container door and doesn't affect other use functions of the container.