A foldable screen assembly for an electronic device, comprising: a shaft assembly; a support assembly, comprising a first supporting plate and a second supporting plate coupled to the shaft assembly; the first supporting plate and the second supporting plate being rotatable along with the shaft assembly such that the foldable screen assembly is switchable between a folded state and an unfolded state; and a flexible display screen, comprising a first end and a second end opposite to each other and respectively located at two opposite sides of the shaft assembly; the first end being fixedly connected to the first supporting plate, and the second end being elastically coupled to the second supporting plate; wherein in the unfolded state, the support assembly is at a same level as the shaft assembly; in the folded state, the first supporting plate and the second supporting plate overlap, and the flexible display screen is folded in half; wherein the foldable screen assembly further comprises an elastic member, connected to the second end and the second supporting plate; characterized in that: the elastic member is an elastic strip, two opposite ends of the elastic member are connected to two ends of the second end along a thickness direction of the second end, and a middle portion of the elastic member is connected to the second supporting plate; when the foldable screen assembly is in the folded state, the elastic member has a first elastic deformation amount; when the foldable screen assembly is in the unfolded state, the elastic member has a second elastic deformation amount; the first elastic deformation amount is greater than the second elastic deformation amount; and the second elastic deformation amount is greater than zero. a shaft assembly; a support assembly, comprising a first supporting plate and a second supporting plate coupled to the shaft assembly; the first supporting plate and the second supporting plate being rotatable along with the shaft assembly such that the foldable screen assembly is switchable between a folded state and an unfolded state; and a flexible display screen, comprising a first end and a second end opposite to each other and respectively located at two opposite sides of the shaft assembly; the first end being fixedly connected to the first supporting plate, and the second end being elastically coupled to the second supporting plate; wherein in the unfolded state, the support assembly is at a same level as the shaft assembly; in the folded state, the first supporting plate and the second supporting plate overlap, and the flexible display screen is folded in half; wherein the foldable screen assembly further comprises an elastic member, connected to the second end and the second supporting plate; characterized in that: the elastic member is an elastic strip, two opposite ends of the elastic member are connected to two ends of the second end along a thickness direction of the second end, and a middle portion of the elastic member is connected to the second supporting plate; when the foldable screen assembly is in the folded state, the elastic member has a first elastic deformation amount; when the foldable screen assembly is in the unfolded state, the elastic member has a second elastic deformation amount; the first elastic deformation amount is greater than the second elastic deformation amount; and the second elastic deformation amount is greater than zero. the elastic member is an elastic strip, two opposite ends of the elastic member are connected to two ends of the second end along a thickness direction of the second end, and a middle portion of the elastic member is connected to the second supporting plate; when the foldable screen assembly is in the folded state, the elastic member has a first elastic deformation amount; when the foldable screen assembly is in the unfolded state, the elastic member has a second elastic deformation amount; the first elastic deformation amount is greater than the second elastic deformation amount; and the second elastic deformation amount is greater than zero.