Bottom support, packaging box and household appliance assembly

The embodiment of the utility model provides a bottom support, a packaging box and a household appliance assembly. The bottom support comprises a buffering bottom support of a split structure. The buffering bottom support comprises a bearing component and a buffering component, the limiting component is located on the side portion of the bearing component, a groove with an upward opening is defined by the limiting component and the bearing component, and the groove is arranged to contain and position the bottom of a to-be-protected product; based on the fact that the bottom of the to-be-protected product is arranged in the groove, the limiting component is arranged to be capable of being detached from the side portion of the to-be-protected product. The bottom support and the limiting component are located on the side portion of the bearing component and define a groove with an upward opening with the bearing component, the bottom of a to-be-protected product is arranged in the groove, and the limiting component is detached from the side portion of the to-be-protected product so that friction force between the side face of the bottom of the to-be-protected product and the limiting component can be removed. In this way, after the heat-pump water heater is lifted, mounting personnel can drag down the bearing component more easily.