Abstract: Based on the complex network analysis method, this study analyzed and visualized the data of 5G eMBB patent. We analyzed its technological competitive situation and patent strategies of leading firms. The study revealed that under the background of standard fragmentation, the firms’ patent strategies have changed strategically. To compete with American firms, Asian companies generally choose dislocation competition in the patent technology field. Although Huawei, OPPO and other Chinese enterprises have occupied an important position in global 5G technology landscape through differentiation and key breakthroughs, they are still insufficient in the breadth and depth of technology field compared with foreign enterprises such as Qualcomm. IDAC provides some important revelations of non-product-oriented patent strategy. Finally, we put forward some suggestions for innovation and patent strategy under the background of complex technology.