The invention relates to fittings for cement production equipment, in particular to a preheater hanging plate. The joint side of a hanging plate body is provided with a joint structure to be joined to an adjacent hanging plate body; after the adjacent hanging plate bodies are joined, spacing between the adjacent hanging plate bodies is small; after the hanging plate bodies are joined, a formed refractor layer has good sealing performance; in addition, the adjacent hanging plate bodies are joined through the joint structures, only the joint structures need a locking device, the adjacent hanging plate bodies can be connected with no need for connectors, the structure of the hanging plate is simpler, and manufacturing cost of the hanging plate is reduced.