The utility model relates to a synthetic field of catalyst specifically provides an equipment for preparing catalytic cracking catalysts, and this equipment includes: na type molecular sieve exchange device, the difunctional burning furnace that bakes over a slow fire, the super steady reactor of gaseous phase, gas - solid separator device, washing filter unit becomes the mucilage binding and puts dry calcination unit, the difunctional burning furnace of baking over a slow fire includes the furnace body and sets up barrel in the furnace body, the barrel includes feed end, middle barrel and discharge end in proper order, along the material trend, bake burning furnace over a slow fire still including setting gradually it is right to be used for in the barrel the vapor distributor that provides vapor in the barrel with be used for right provide the dry gas distributor that is used for as dry baking medium's dry gas in the barrel. The utility model discloses a difunctional burning furnace of baking over a slow fire can realize the super steady and dry calcination of hydrothermal simultaneously, makes the utility model discloses an equipment can realize simultaneously that the hydrothermal is super steady super steady with the gaseous phase, and is especially adapted in preparing catalytic cracking catalyst.