In this paper, we investigate the deformation behavior of magnesium wrought alloy(AZ61). The cylinder compression test was carried out at room temperature and elevated temperatures. At room temperature, the flow stress shows a hardening at the initial stage of deformation and shows a maximum value of 483 MPa at fracture. The deformation ratio to failure reaches 0.12. At temperature above 200degreesC, the flow stress decreased and the sample is easily deformed above 0.5 in deformation ratio without failure. Based on the results, the possibility of applying the warm lateral extrusion of AZ61 alloy was examined and a sound product is obtained at 213 degreesC. Furthermore, forgiability is improved by applying the counteracting pressure and rising the hydrostatic pressure and, the sound products is obtained below 200 degreesC.