The invention belongs to the technical field of petroleum extraction, relates to petroleum extraction machinery, and in particular to a fracturing pump truck with a self-suction and self-discharge function. The fracturing pump truck comprises a bearing chassis, a truck storage battery and a truck engine. A centrifugal pump and the low-pressure manifold thereof are disposed at the tail of the bearing chassis. A hydraulic pump is connected to the power take-off opening of the engine. The hydraulic pump is connected with the hydraulic motor of the centrifugal pump. By the fracturing pump truck, the problem that parts of existing fracturing trucks are limited by power and cannot satisfy fracturing process requirements is solved, self-suction and self-discharge are achieved, utilization efficiency of the fracturing pump truck is increased, and a fracturing blender truck and corollary equipment are saved.