对预应力钢 混凝土组合梁的应用发展作了简要的介绍。依据现有的研究成果 ,尤其是对预应力简支组合梁的试验研究成果进行了介绍和评价。同时通过对算例的计算分析 ,比较了普通组合梁和预应力组合梁的受力性能 ,以及计算方法之间的差异 ,这对预应力组合梁的设计有一定的参考价值 The application and development of prestressed steel concrete composite beams are briefly introduced. Based on the existing research results, especially the experimental research results of prestressed simply supported composite beams are introduced and evaluated. At the same time, through the calculation and analysis of the example, the mechanical properties of ordinary composite beams and prestressed composite beams are compared, and the differences between calculation methods are given, which will be of some reference value to the design of prestressed composite beams