The invention discloses a power cable reel rack storage device. The power cable reel rack storage device comprises a base and two hinged frames arranged on the two sides of the base. Each hinged frame comprises supporting arms, wherein the upper ends of the supporting arms are hinged together through a hinged shaft. A semi-ring is fixedly connected between the two ends of each hinged shaft. The lower ends of the supporting arms are clamped on the four corners of the base through clamping parts. Cross arms are correspondingly and fixedly arranged at the equal-height positions of the supporting arms. An upper frame which is supported by the cross arms is arranged between the two hinged frames. The upper frame and the cross arms are locked together through locking parts. A base hole used for clamping power cable reel racks is formed in the middle of the base. The upper frame can be contained in the base hole. An upper frame hole used for clamping the power cable reel racks is formed in the middle of the upper frame. The power cable reel rack storage device has the advantages that the structure is reasonable, the device can be assembled quickly when used, up-down stacking of the horizontally-placed power cable reel racks can be achieved, and the power cable reel racks are firmly placed and are easy to take and place; moreover, the device can be dismounted and stored conveniently when not in use and is small in occupied space and particularly suitable for quickly storing a large number of power cable reel racks in a warehouse with a limited space.