The invention relates to a rotary furnace grate with bidirectional segregation and automatic slag removal functions. The rotary furnace grate comprises a middle shaft, a left shaft and a right shaft, wherein the middle shaft, the left shaft and the right shaft are arranged between a combustor and an ash removal cabin in the furnace body side by side; the left shaft and the right shaft are symmetrically arranged on two sides of the middle shaft; a material poking rod is fixedly arranged on the middle shaft; the material poking rod is arranged above the middle shaft in parallel; a gear transmission pair is arranged between the left shaft and the right shaft; an elliptic middle cam is arranged at the front end of the middle shaft; an elliptic left cam and an elliptic right cam are respectively arranged at the front end of the left shaft and the front end of the right shaft; the left shaft and the right shaft synchronously rotate in opposite directions; and the left cam and the right cam poke the middle cam to swing leftwards and rightwards in turn so that the middle shaft drives the material poking rod to swing leftwards and rightwards. Compared with the prior art, the rotary furnace grate is simple in structure and convenient to use, and is capable of realizing sufficient combustion through averagely poking the combustion materials sent into the combustor by the material poking rod.