The invention discloses a multifunctional grain-collection carrier vehicle comprising a power device, a machine frame, a grain storage bin, an auger set, a sweeping device and an adjustment device. The multifunctional grain-collection carrier vehicle is easy to operate, high in efficiency, thorough in grain collection and environment-friendly. The grain storage bin is additionally arranged, and the adaptability of the device is increased. When the multifunctional grain-collection carrier vehicle works on a narrow-field sunning ground, grain can be directly collected in the grain storage bin, a discharge port capable of rotating by 360 degrees is additionally added, the multifunctional grain-collection carrier vehicle can be used on different places, loading can be conducted on the left side and the right side, and the multifunctional grain-collection carrier vehicle is compact in structure and flexible in work.