Concrete mixer truck and control method thereof

The invention relates to the technical field of vehicles, and discloses a concrete mixer truck and a control method thereof. The concrete mixer truck comprises an engine, an engine rotating speed detection assembly, a variable hydraulic pump, a transmission assembly, a hydraulic motor, a tank, a control unit, a motor rotating speed detection assembly and a tank rotating speed presetting unit; the control unit is used for determining opening information of the variable hydraulic pump according to the target rotating speed set by the tank rotating speed presetting unit and rotating speed information of the engine, controlling the displacement of the variable hydraulic pump according to the opening information of the variable hydraulic pump so as to adjust the rotating speed of the hydraulic motor, generating opening correction data of the variable hydraulic pump according to difference information between the actual rotating speed detected by the motor rotating speed detection assembly and the target rotating s