Method for producing magnesium alloy plate and magnesium alloy plate

To provide a method for producing a magnesium alloy plate which can be suitably employed for producing a magnesium alloy plate excellent in the plastic workability such as press workability. A method for producing a magnesium alloy plate according to the present invention relates to a method for rolling a magnesium alloy raw sheet by a rolling roll. The rolling includes a controlled rolling which is carried out under the following conditions (1) and (2), where M (mass %) represents an aluminum content of a magnesium alloy constituting the raw sheet: (1) a surface temperature of the magnesium alloy raw sheet (Tb, DEG C) immediately before the insertion to the rolling roll satisfying the following formula: 8.33 x M + 135 = Tb = 8.33 x M + 165 with the proviso that 1.0 = M = 10.0, and (2) a surface temperature of the rolling roll (Tr) of 150 to 180 DEG C.