Abstract: Unmanned aerial vehicle （UAV）communication has become a research hotspot in both civilian and military fields because of its low construction cost, low security risk and good mobility and other features. In the future information battlefield, enemy eavesdroppers attempt to wiretap the control instructions and confidential information transmitted from UAVs. As for the UAV communication scenario with eavesdroppers, a secure beamforming scheme is proposed to maximize the system secrecy rates. From the experimental results, the proposed algorithm can effectively suppress the eavesdropping behaviors of the enemy terminals and can improve the security transmission performance of the system.