The invention discloses a virtual micro-classroom performance broadcasting system, and relates to the technical field of performance broadcasting. The system comprises an intelligent blackboard, a high-definition camera, a reverse viewing system, an audio acquisition device, a virtual and real performance recording and broadcasting system and a resource management platform, wherein the intelligentblackboard is used for a teacher to play teaching PPT for teaching explanation; the high-definition camera is used for recording PPT played by the intelligent blackboard and teacher images; the audioacquisition device is used for acquiring the voice of teachers; the audio acquisition device is used for being connected with a wireless audio system; and the output end of the wireless audio systemis connected with the virtual and real performance recording and broadcasting system. The virtual and real performance recording and broadcasting system comprises a screen recording and image mattingmodule and an image matting synthesis module; and the virtual and real performance recording and broadcasting system is connected with the resource management platform. According to the invention, bydesigning a set of true three-dimensional micro-class MOOC system, high-quality recording and packaging are completed quickly, heavy class recording tasks are greatly reduced, and the quality and appreciation of video courseware are improved.