The invention provides a coking sulfur-containing sewage primary deoiling apparatus and a coking sulfur-containing sewage primary deoiling method. The apparatus comprises an oil collecting pipe, a material inlet pipe, a water outlet total pipe and at least a cyclone separation pipe, wherein the upper portions of each cyclone separation pipe are respectively provided with a converging filler layer,the oil collecting pipe is positioned above the cyclone separation pipe, and is communicated to the upper portion of the cyclone separation pipe, the material inlet pipe is communicated to the side wall of the cyclone separation pipe to spray coking sulfur-containing sewage from the side wall of the cyclone separation pipe, and the water outlet total pipe is positioned below the cyclone separation pipe, and is communicated to the cyclone separation pipe. According to the present invention, with the apparatus and the method, based on the weak cyclone centrifugal separation and the coalescencesedimentation deoiling, the oil-water-solid three-phase separation is accelerated, the process design is reasonable, the treatment effect is good, the treatment efficiency is high, and the closed system is adopt so as not to generate toxic and harmful odor gases, such that the advantages of safety and environmental protection can be achieved.