The utility model provides an orange juice extracting machine comprising a first rotating shaft and a second rotating shaft, wherein the first rotating shaft and the second rotating shaft are arranged inside a machine body and are parallel; the upper end of the first rotating shaft is provided with a first lower juicing head, and the upper end of the second rotating shaft is provided with a second lower juicing head; the lower juicing heads are provided with convex ribs and grooves; the convex ribs and the grooves are used for extracting orange juice and are concave and convex alternately; the lower ends of the two rotating shafts are provided with drive devices used for driving the rotating shafts to rotate; the upper portion of the machine body is provided with an upper cover used for covering the lower juicing heads. Due to the fact that the two rotating shafts and the juicing heads are arranged inside the machine body, a whole orange can be extracted at a time, and the efficiency of the orange juice extracting machine is twice that of an ordinary orange juice extracting machine.