Clamping device capable of conveniently clamping sewn materials and pattern sewing machine with same

The utility model discloses a clamping device capable of conveniently clamping sewn materials and a pattern sewing machine with the clamping device, relates to the technical field of pattern sewing machines, solves the problem that the sewn materials are inconvenient to clamp on the pattern sewing machine, and comprises a machine table, a sewing machine, the clamping device and a moving device. The sewing machine is provided with a microcomputer used for controlling the sewing machine and the moving device, the clamping device comprises an upper clamping plate and a lower clamping plate, the lower clamping plate is placed on the machine table, the upper clamping plate can rotate with the length direction of the machine table as a rotating shaft, and the clamping device is in sliding connection with the moving device. The clamping device has a taking-out state and a withdrawing state, and the rotatable angle of the upper clamping plate is not smaller than 90 degrees after the clamping device is taken out in a