The invention relates to the technical field of filter production devices, in particular to a full-automatic servo filter element paper folder. The full-automatic servo filter element paper folder comprises a base, a workbench, an end plate, a beam, a cooling device and a paper folding device. The paper folding device comprises a lower guide plate, an upper guide plate, an upper guide plate heating disc, a lower guide plate heating disc, a front paper folding blade, a front fixed arm, a front rotary arm, a lower rotary shaft, a rear paper folding blade, a rear fixed arm, a rear rotary arm, an upper rotary shaft and a servo motor. A groove is formed in the workbench, the lower guide plate is fixedly arranged in the groove of the workbench, and the upper guide plate is fixedly arranged in the groove of the workbench. A paper folding groove is formed in the upper guide plate, the upper guide plate heating disc is fixedly arranged on the lower guide plate, and the lower guide plate heating disc is fixedly arranged at the bottom of the groove. The front paper folding blade is arranged on the lower rotary shaft, the rear paper folding blade is arranged on the upper rotary shaft, and the servo motor is connected with the upper rotary shaft and the lower rotary shaft in a transmission mode. The structural design is reasonable, paper folding is facilitated, the speed is high, efficiency is high, the cooling effect is good, the stable and reliable effects are achieved, and the automatic degree is high.