本研究以循环肿瘤细胞(MCF-7)为研究对象,利用软光刻技术制备了微米尺寸的微柱，利用静电纺丝技术在含有微柱结构的基底上面纺上PLGA纳米纤维，形成一种微米和纳米复合尺寸的生物界面，在纳米纤维上修饰特异性抗体，实现肿瘤细胞(MCF-7)的捕获。这种研究方法结合了微流控技术和静电纺丝技术，制备出一种三维微柱网络支架结构，增大了细胞的捕获空间，再通过对微结构上的纳米纤维进行改性，提高了循环肿瘤细胞检测的灵敏度，这种研究方法大大提高了循环肿瘤细胞检测的效率，为临床癌症检测提供了新的研究方向。 In this study, circulating tumor cells (McF-7) were used as the research object. Microcolumns of micron size were prepared by soft photolithography. Using electrostatic spinning technology, PLGA nanofibers were spun on the microcolumnar substrates, then a micron-nanocomposite biological interface was prepared. Specific antibodies were modified on nanofibers, circulating tumor cells can be captured at this time. This research method combines microfluidic technology and electrostatic spinning technology. The three-dimensional microcolumn network scaffold structure is prepared to increase the capture space of cells, and the sensitivity of detection of circulating tumor cells was improved by modifying the nanofibers on the microstructure. This method greatly improves the detection efficiency of circulating tumor cells, and also provides a new research direction for clinical cancer detection.