A flexible screen mobile terminal, comprising: a terminal main body, having a first main body surface for mounting a flexible screen; a terminal auxiliary body, disposed at one end of the terminal main body, and having a first auxiliary body surface for mounting the flexible screen; the flexible screen, lapped jointly on the first main body surface and the first auxiliary body surface; and a screen support, configured to fix the flexible screen, and enable the flexible screen to be movably connected to the terminal auxiliary body via the screen support, the terminal main body and the terminal auxiliary body being detachably connected in a plug-connection mode, the terminal main body and the terminal auxiliary body in a separation state being capable of rotating relatively around an axis parallel to a plane of the flexible screen, the terminal auxiliary body being provided with a sliding groove perpendicular to the axis, enabling the screen support to slide on the sliding groove, and the screen support being slidably connected to the terminal auxiliary body via the sliding groove, characterized in that the screen support is provided with an auxiliary body limit block for limiting a relative sliding distance between the screen support and the terminal auxiliary body, and the auxiliary body limit block is disposed at one end of the screen support near the terminal auxiliary body, the auxiliary body limit block is a gear-like structure, and is rotatably mounted to the screen support via a rotation shaft, a rack structure matched with the auxiliary body limit block is provided in the sliding groove, and a relative position of the terminal auxiliary body and the screen support is controlled by cooperation of the gear-like structure and the rack structure. a terminal main body, having a first main body surface for mounting a flexible screen; a terminal auxiliary body, disposed at one end of the terminal main body, and having a first auxiliary body surface for mounting the flexible screen; the flexible screen, lapped jointly on the first main body surface and the first auxiliary body surface; and a screen support, configured to fix the flexible screen, and enable the flexible screen to be movably connected to the terminal auxiliary body via the screen support, the terminal main body and the terminal auxiliary body being detachably connected in a plug-connection mode, the terminal main body and the terminal auxiliary body in a separation state being capable of rotating relatively around an axis parallel to a plane of the flexible screen, the terminal auxiliary body being provided with a sliding groove perpendicular to the axis, enabling the screen support to slide on the sliding groove, and the screen support being slidably connected to the terminal auxiliary body via the sliding groove, characterized in that the screen support is provided with an auxiliary body limit block for limiting a relative sliding distance between the screen support and the terminal auxiliary body, and the auxiliary body limit block is disposed at one end of the screen support near the terminal auxiliary body, the auxiliary body limit block is a gear-like structure, and is rotatably mounted to the screen support via a rotation shaft, a rack structure matched with the auxiliary body limit block is provided in the sliding groove, and a relative position of the terminal auxiliary body and the screen support is controlled by cooperation of the gear-like structure and the rack structure.