The invention relates to a tilting type pure-oxygen fuel gas rotary furnace. The tilting type pure-oxygen fuel gas rotary furnace comprises a rack and a furnace body. A first guiding ring is arranged at the front portion of the furnace body in a sleeving manner, and a second guiding ring is arranged at the rear portion of the furnace body in a sleeving manner. The rack is provided with a carrier roller base and a supporting ball supported on the first guiding ring. The bottom of the supporting ball is rotationally arranged on the carrier roller base. The rack is provided with an arc guide rail. A supporting base is movably arranged in the arc guide rail. A lifting device is arranged between the supporting base and the rack. The supporting base is rotationally provided with a carrier roller matched with the second guiding ring. The carrier roller is connected with a rotation driving device. The tilting type pure-oxygen fuel gas rotary furnace further comprises a nozzle stretching into the furnace body. The bottom of the supporting ball is rotationally arranged on the carrier roller base. The first guiding ring is provided with an arc face matched with the top of the supporting ball so that the furnace body can swing around the supporting ball, and when a hydraulic cylinder jacks the supporting base, the furnace body can incline, and operation is greatly convenient.