The invention provides a spiral conveyor for quickly cooling needle coke high-temperature powder. The spiral conveyor for quickly cooling the needle coke high-temperature powder comprises a feeding pipe, a feeding motor, a movable base, a feeding port, movable brake wheels, an adjustable sliding supporting rod structure, a rotatable adjusting feeding hopper structure, a detachable adding conveyingcover structure, an observable cleaning cover structure, a support column, a connecting seat, a supporting rod, a sliding groove, a sliding hole, a U-shaped sleeving seat, an inverted-U-shaped inserting connection seat, a cleaning hole, fixing rods, wing-shaped nuts, a spiral auger rod and a rotating seat. According to the spiral conveyor for quickly cooling the needle coke high-temperature powder, due to the cooperative arrangement of a shielding cover, an observation sheet, a locking bolt, a silica gel ring, a pushing rod, a clamping connection rod, the feeding pipe, the cleaning hole, thefixing rods and the wing-shaped nuts, the wing-shaped nuts can be loosened easily in the using process, then the pushing rod is grasped to rotate the shielding cover and the observation sheet, materials blocked in the feeding pipe are cleaned through the cleaning hole, and the spiral feeding work is prevented from being influenced by blockage of the feeding pipe in work.