A variable curved surface bracket structure is provided, including a base and a bracket, and the bracket is in contact with the back of the display screen; the bracket includes a fixed sheet and moving sheets respectively hinged on two sides of the fixed sheet. The variable curved surface bracket structure further includes a moving mechanism, disposed on the base and drivingly connected to the moving sheets to make the moving sheets rotate forward or backward relative to the fixed sheet. The moving mechanism includes a pushrod structure arranged on the base and includes a retractable pushrod and a driving device drivingly connected to the pushrod; at least a linkage strut assembly including at least a connecting rod and at least a strut. The disclosure allows the curvature of the display screen in contact with the bracket to be adjustable, curved or planar, to meet different viewing needs.