The invention discloses an integrated deep-sea mining vehicle which includes a walking mechanism, a vehicle frame, a cutting device, a collecting device, a hydrocyclone, a material bin, and a liftingdevice. The cutting device includes a cutting head, a movable arm, a bracket and a hydraulic cylinder, the cutting head is installed at one end of the movable arm, the cutting head is driven to rotateby a driving device, the other end of the movable arm is hinged to the top of the bracket, a piston rod of the hydraulic cylinder is connected to the middle part of the movable arm, and a cylinder barrel is hinged to the bottom of the bracket. The collecting device includes an ore suction chamber, a hard tube, a hose and a centrifugal pump which are in communication in sequence, the ore suction chamber is arranged inside the cutting head, the discharge end of the centrifugal pump is in communication with the hydrocyclone, and the hydrocyclone is in communication with the material bin througha pipeline. The integrated deep-sea mining vehicle integrates the mining processes such as leveling, cutting, collection, and separation, economical, efficient, reliable, and continuous deep-sea mining operations are realized, and the integrated deep-sea mining vehicle is suitable for large-scale mining of seabed polymetallic sulfide ores.