This paper discusses the performance characteristics of image reconstruction based on compressive sensing method on microwave imaging using horn antennas. A tree trunk with a circular hole in the center is employed as a targeted object for the image reconstruction, and two quad-ridge horn antennas (QRHA) with dual polarization are used as a transmitter and a receiver on microwave imaging. The transmission coefficient of two antennas obtained from the data acquisition process are used for processing the image reconstruction. The selected method for image reconstruction is using compressive sensing which considers the variation in transmission signal strength. In order to carry out the process, the object of tree trunk is positioned between two antennas. A parallel beam setup recognizes the object with 72 projections produced by an angular rotation of 5 degrees for 360 degrees. Two transmission coefficient data are obtained by utilizing dual polarized feature of QRHA, namely vertical polarization and horizontal polarization. Here, the compressive sensing method is used to decrease the required number of data acquisition on microwave imaging. The result of image reconstruction obtained from the data acquisition is observed at several working frequencies of the antennas. It shows that the image of targeted object could be successfully reconstructed using compressive sensing method with variety on the image quality for different frequency observation.