The invention discloses a sulfur transfer agent and FCC catalyst production fine-powder and wastewater utilization method. The method comprises the following steps: carrying out solid-liquid pre-separation treatment on FCC catalyst production wastewater so as to obtain pre-separated clear liquid and pre-separated heavy phase and/or sediment, carrying out levigation treatment on the pre-separated clear liquid and pre-separated heavy phase and/or sediment and sending the levigated substances into a gel-forming kettle for production of an FCC catalyst; mixing the pre-separated clear liquid and production wastewater of a sulfur transfer agent, adding fine powder of the sulfur transfer agent, controlling pH value, carrying out two-stage separation treatment, sending a separated clear liquid obtained to the sulfur transfer agent production process, and sending the levigated heavy phase and/or sediment into a gel-forming kettle for production of the sulfur transfer agent. According to the invention, fine powder of auxiliary agents and rare earth element and solid particles which are dissolved in wastewater can be reused. Thus, resources are recovered, and environmental pollution is reduced.