Proceed from promoting the performance of information systems by utilizing the entangled signals for replacing the radio signals, firstly, this paper illuminates the necessity of developing entanglement microwave technologies and reviews the history of generating path entangled microwave signal, and then concludes four available path entangled microwave signal generation setups by utilizing superconducting 180° hybrid ring, Wilkinson power divider, Josephson parametric converter and Hong-Ou-Mandel effect in microwave domain, respectively. On the basis of the detail description of microwave beam splitter used in each setup, from aspects of the experimental facility and the ultimate principle of setups that is available, path entangled microwave signal generation setups are analyzed by means of contrast analysis, and the expression of these signal generated in each setup is stated. At the last part of the paper, there is a concrete analysis about advantages and drawbacks of each setup, and a brief summary about the major limitations of developing entanglement microwave technologies. The paper clearly points out the development prospect. And an outlook about future research of path entangled microwave signal’s generation is stated.