An experimental investigation was carried out to measure two types of various compression paths on the extruded AZ31 Mg alloy rod at room temperature. The first type is a two-stepped compression with vertical radial directions, which was named as RD1-RD2 compression. The second type is that the compression direction is subsequently extruding and radial directions, which was named as ED-RD1 compression. The variation on grains orientation and mechanical properties during above compressions were analyzed. The obtained results reveal that large amounts of {10-12} extension twins and {10-12}-{10-12} secondary twins activated during deformation. Besides, many crossed twin boundaries formed within grains caused by different twin variants activations. On the whole, twin activation obey the Schmid law. On one hand, for the RD1-RD2 compression, the stress-strain curves of the first and second compressions are almost identical. On the other hand, for the ED-RD1 compression, the stress values of the stress-strain curve of the second compression was significantly higher than that of the first compression.