The invention discloses a 1050-H14 aluminum alloy plate strip and a production method thereof. The production method comprises the following production processes of: fusion casting, saw cutting, plane milling, heating, hot rolling and cold rolling, wherein an ingot casting subjected to fusion casting comprises the following chemical components in percentage by mass: not more than 0. 2 percent of Si, 0.15-0.40 percent of Fe, not more than 0.05 percent of Cu, not more than 0.05 percent of Mn, not more than 0.05 percent of Mg, not more than 0.05 percent of Zn, 0.01-0.03 percent of Ti, not more than 0.02 percent of each of other impurities, and the balance of Al, wherein the other impurities are not more than 0.10 percent in total; the melting temperature is 730-750 DEG C, the refining temperature is 720-750 DEG C, the casting temperature is 670-700 DEG C, and the casting speed is 55-65mm/min; and in the hot rolling step, blooming forging is carried out at 450-500 DEG C through hot rough rolling, wherein the finish reeling temperature is 300-320 DEG C, and the rolling thickness is 2.5-8mm. The production method disclosed by the invention ensures that the mechanical property of the 1050-H14 aluminum alloy plate strip is stable and qualified and has the advantages of shortening the production flow and improving the production efficiency.