A farmland mowing, film collecting and rotary tillage vehicle comprises a cab, a console inside the cab, a mowing device, a film collecting device, a storage compartment, a vertical and horizontal rotary tilling device, a vehicle body chassis, four front and rear wheels provided with hydraulic motors, and a chimney, a high pressure pump station, an electric generator, a motor and a belt between the cab and the storage compartment, wherein the mowing device is mounted at the front end of the vehicle body; the film collecting device is installed between the front wheels and the rear wheels; the vertical and horizontal rotary tilling device is installed at the tail end of the vehicle body chassis and comprises two hoist cylinders, two locating slide sleeves, two locating columns, a vertical rotary tillage gearbox, two horizontal gearboxes, a transverse spindle, a horizontal rotary blade, a vertical rotary blade, a guard plate, a motor, a gearbox, a connection plate and a depth regulation cylinder. The farmland mowing, film collecting and rotary tillage vehicle is highly automatic and labor-saving, has short working time and high working efficiency, integrates functions of a mowing machine, a film collecting machine and a rotary cultivator, has complete functions, and reduces energy consumption and product costs.