An electronic device, comprising: a housing assembly comprising a first housing, and a second housing connected to the first housing, wherein the first housing has a first supporting surface, the second housing has a second supporting surface, and the first supporting surface is flush with the second supporting surface; a tension assembly connected to the housing assembly; and a flexible screen module comprising a fixed end, and a free end opposite to the fixed end, wherein the fixed end is connected to the first housing and supported by the first supporting surface, the free end bypasses an end of the second housing facing away from the first housing and extends into the housing assembly, and the free end is connected to the tension assembly, wherein the first housing is movable relative to the second housing to enable at least a part of the flexible screen module to unfold on the second supporting surface or to retract into the housing assembly, wherein the tension assembly comprises an elastic member and a movable member; the second housing, the free end, and the elastic member are connected to the movable member, and the elastic member is connected to the second housing, characterized in that, the free end has a first slideway defined therein; one end of the movable member is rotatably connected to the second housing, the movable member has a limit column provided on the other end thereof and disposed in and penetrating through the first slideway; in the process of the flexible screen module unfolding from the housing assembly, the movable member is driven by the flexible screen module to swing relative to the second housing and enable the limit column to slide along the first slideway; and in the process of the flexible screen module retracting into the housing assembly, the movable member is driven by the elastic member to swing and to restore. a housing assembly comprising a first housing, and a second housing connected to the first housing, wherein the first housing has a first supporting surface, the second housing has a second supporting surface, and the first supporting surface is flush with the second supporting surface; a tension assembly connected to the housing assembly; and a flexible screen module comprising a fixed end, and a free end opposite to the fixed end, wherein the fixed end is connected to the first housing and supported by the first supporting surface, the free end bypasses an end of the second housing facing away from the first housing and extends into the housing assembly, and the free end is connected to the tension assembly, wherein the first housing is movable relative to the second housing to enable at least a part of the flexible screen module to unfold on the second supporting surface or to retract into the housing assembly, wherein the tension assembly comprises an elastic member and a movable member; the second housing, the free end, and the elastic member are connected to the movable member, and the elastic member is connected to the second housing, characterized in that, the free end has a first slideway defined therein; one end of the movable member is rotatably connected to the second housing, the movable member has a limit column provided on the other end thereof and disposed in and penetrating through the first slideway; in the process of the flexible screen module unfolding from the housing assembly, the movable member is driven by the flexible screen module to swing relative to the second housing and enable the limit column to slide along the first slideway; and in the process of the flexible screen module retracting into the housing assembly, the movable member is driven by the elastic member to swing and to restore.