A flexible display apparatus, comprising: a roller shaft; and a flexible module comprising a rolling and sliding area and a plane area, wherein the rolling and sliding area is configured to move around the roller shaft to realize unfolding and folding of the flexible module; the flexible module comprises a flexible display screen and a support assembly; the support assembly is arranged on a surface of the flexible display screen facing the roller shaft, and comprises a first support member and a second support member; the first support member is a bendable plate-like structure, and the second support member is arranged on a side of the first support member away from the flexible display screen and comprises a plurality of support bars arranged in a moving direction of the flexible module, and each support bar has a same extending direction as the roller shaft and is fixed on the first support member; wherein the flexible display apparatus further comprises a tension applying component; wherein the support assembly comprises a first end and a second end oppositely arranged; the support assembly bypasses the roller shaft along a direction from the first end to the second end, and the first end is connected to the tension applying component; wherein the tension applying component comprises a traction part, a steering shaft component and a fixing part; the traction part comprises a third end and a fourth end, the third end is connected to the first support member, and the fourth end bypasses the steering shaft component and is connected to the fixing part; and the roller shaft moves relative to the fixing part, to drive the flexible module to move and unfold around the roller shaft; characterized in that, the steering shaft component comprises a moving shaft and a fixed shaft; and the traction part bypasses the fixed shaft and the moving shaft so that an extending direction reversed twice; and a position of a shaft center of the fixed shaft is fixed relative to the fixing part, and a position of a shaft center of the moving shaft is fixed relative to a shaft center of the roller shaft. a roller shaft; and a flexible module comprising a rolling and sliding area and a plane area, wherein the rolling and sliding area is configured to move around the roller shaft to realize unfolding and folding of the flexible module; the flexible module comprises a flexible display screen and a support assembly; the support assembly is arranged on a surface of the flexible display screen facing the roller shaft, and comprises a first support member and a second support member; the first support member is a bendable plate-like structure, and the second support member is arranged on a side of the first support member away from the flexible display screen and comprises a plurality of support bars arranged in a moving direction of the flexible module, and each support bar has a same extending direction as the roller shaft and is fixed on the first support member; wherein the flexible display apparatus further comprises a tension applying component; wherein the support assembly comprises a first end and a second end oppositely arranged; the support assembly bypasses the roller shaft along a direction from the first end to the second end, and the first end is connected to the tension applying component; wherein the tension applying component comprises a traction part, a steering shaft component and a fixing part; the traction part comprises a third end and a fourth end, the third end is connected to the first support member, and the fourth end bypasses the steering shaft component and is connected to the fixing part; and the roller shaft moves relative to the fixing part, to drive the flexible module to move and unfold around the roller shaft; characterized in that, the steering shaft component comprises a moving shaft and a fixed shaft; and the traction part bypasses the fixed shaft and the moving shaft so that an extending direction reversed twice; and a position of a shaft center of the fixed shaft is fixed relative to the fixing part, and a position of a shaft center of the moving shaft is fixed relative to a shaft center of the roller shaft.