The invention provides a ladder for a supermarket shelf. Through the ladder, the technical problems that an existing ladder is inconvenient to move, a ladder body cannot located effectively during usage, and operation is inconvenient are solved. The ladder for the supermarket shelf comprises a ladder body. The lower portion of the ladder body is provided with rolling wheels through connection structures. Each connection structure comprises an installation plate, a locating plate, a guide rod, a guide sleeve and a spring. The installation plates are fixed to the lower portion of the ladder body. The guide rods are vertically fixed to the installation plates. The guide sleeves are slidably arranged on the guide rods. The springs are arranged on the guide rods in a penetrating mode. The upper ends of the springs are connected with the installation plates. The lower ends of the springs are connected with the guide sleeves. The locating plates are fixed to the guide sleeves. The rolling wheels are fixed to the locating plates. The ladder body is further provided with a locating structure. The ladder for the supermarket shelf has the advantage of convenient operation.