Oil and gas well fracturing truck additionally provided with filling system

The utility model discloses an oil and gas well fracturing truck additionally provided with a filling system, belongs to the technical field of petroleum and natural gas extraction equipment, and aims to solve the problems that a fracturing pump is poor in suction, and a knocking phenomenon exists between a valve body and a valve seat. The fracturing truck comprises an auxiliary frame arranged on a loading chassis, a diesel engine, a hydraulic transmission, a radiator, a transmission shaft shield and a fracturing pump are sequentially arranged on the auxiliary frame, and the fracturing pump 7 is provided with a fracturing pump suction pipe and a fracturing pump discharge manifold. A filling system is arranged at the position, below the loading chassis, behind the fracturing pump, the filling system comprises a hydraulic motor and a centrifugal pump which are connected, a plurality of suction pipes and a plurality of discharge pipes are arranged on the centrifugal pump, and one discharge pipe is connected with