In this study, we designed an antenna sensor array for integrated strain and crack monitoring to understand the monitoring parameters of individual sensors and address the challenge of detection over a large area. First, the design method for the antenna sensor array was investigated on the basis of the strain and crack monitoring principles of antenna sensors. Frequency division multiplexing was implemented in the design of the antenna sensor array to differentiate the resonant frequency information of each array element. Then, the patch layout, patch size, and feed network were designed to form the model of the antenna sensor array, and the strain and crack monitoring capability of the cracked antenna sensor array was analyzed through simulation. Finally, the feasibility of using an antenna sensor array for the integrated strain and crack monitoring of structures was experimentally verified. The theoretical analysis, simulation, and experimental results reveal that the designed antenna sensor array can monitor the integrated strain and crack information of the structure, and the crack monitoring sensitivity of the crack monitoring patch is approximately 13.1 MHz/mm. The strain monitoring sensitivities in the horizontal, vertical, and 45° directions are 1.0783, 1.9466, and 0.7127 kHz/µε, respectively.