This paper studies and proposes a electric-enhanced modified uni-traveling carrier photodetector(EE-MUTC-PD) with a hybrid absorption layer.This structure introduces graded doping to enhance the electric field in the absorption region of the photo detector,and divides the absorption into two parts,partially depleted and depleted,so that the photogenerated electrons drift through the absorption region and the photogenerated holes will be collected during the relaxation time, which effectively solves the problem that the uni-traveling carrier photodetector (UTC-PD) cannot maintain a high bandwidth under low optical power injection,while achieving high responsivity.This photodetector can be used in the next generation 800 Gb/s optical communication system.