Thermally activated delayed fluorescence(TADF) polymers, which not only have the feature of high exciton utilization efficiency, but also possess the advantages of good molecular diversity, solution processing, low cost, and easy realization of large-area flexible devices, etc, have sparked immense attention and shown great potential in the future applications in the past few years. In this review, we start with a description of molecule design principle, device structure and luminescence mechanism of TADF polymers. Next, the structural modification strategies of TADF polymers are summarized according to the different construction strategies and the molecular structure and optoelectronics properties of different types of TADF polymers with a particular emphasis on the recent advances in organic light emitting diodes are illustrated. Finally, the current problems of TADF polymers are discussed, and the perspective and development of TADF polymers are also presented.