The invention discloses a luggage basket conveying device and a luggage security checking system. The luggage basket conveying device comprises a rack, a conveying mechanism basket clamping mechanismand a lifting mechanism, wherein the basket clamping mechanism is arranged at the upper portion of the rack, the basket clamping mechanism can retract back to a side wall of the rack or extend out ofthe side wall of the rack to loosen or clamp a luggage basket. The conveying mechanism is arranged at the lower portion of the rack and is provided with a receiving face for receiving the luggage basket. The lifting mechanism is arranged below the basket clamping mechanism and can ascend to the lower portion of the basket clamping mechanism so as to convey the luggage basket between the basket clamping mechanism and the conveying mechanism, the lifting mechanism is provided with a supporting plate, and the supporting face of the supporting plate is flush the receiving face of the conveying mechanism or is lower than the receiving face of the conveying mechanism. The labor intensity is reduced, and the working efficiency is improved.