The invention provides a reduced bit rate interlaced prediction algorithm for HEVC (high efficiency video coding) intra-frame coding. Although the bit rate of the latest-generation video coding standard HEVC is reduced by half as compared with that of H.264/AVC, HEVC still has probability of further bit rate compression. The main idea of the algorithm is that during division of an HEVC intra-frame prediction CU (coding unit), prediction, transformation, quantization and reconstruction are performed on 1/4 sampling points of the CU, and reconstructed points are taken as reference sample points to predict the other 3/4 points. The prediction distance is reduced, so that the prediction accuracy is improved, the residual error is reduced, and the bit rate is reduced. Experimental results show that compared with standard HEVC, the algorithm has the advantage that the coding efficiency is averagely increased by 26.97% in a low bit rate section while the coding time is only increased by 10.17%.