Abstract: In order to achieve efficient integration of multiple electronic platforms and alleviate the shortage of wireless channel electronic spectrum, a structure and algorithm for airspace multi-beam radar-communications integration combining time-modulation array (TMA) technology and multi-beamforming technology is proposed. The traditional integration technology of space division-based radar-communications integration technology has been improved. While increasing the communications beam, the independent control of the transmission power of the radar and the communications subsystem has been achieved. The proposed structure consists of two sets of weighted networks. The first set of weighted networks is used for radar detection, and the second set of weighted networks combined with periodic time modulation is used for multi-user communications. According to the actual application, the proposed solution can be weighed among multiple indicators such as the number of users, the degree of freedom of beam control, and the complexity of hardware. The simulation results verify the effectiveness of the proposed structure and algorithm. Radar and communications can independently perform their functions without mutual influence.