Abstract: The present invention relates to a magnesium alloy honeycomb board and a production process thereof. The magnesium alloy honeycomb board is formed through the glue-jointing of an upper panel, a lower panel and a honeycomb core structure, and is characterized in that: both the upper and lower panels are made of magnesium alloy sheets with a thickness of 0.6 to 3.5 mm, and the honeycomb core structure is made of magnesium alloy foil with a thickness of 0.08 to 0.25 mm; the thickness of the honeycomb board is within 8 to 45 mm, the thickness of the honeycomb core structure is within 6 to 38 mm, the height of the hexagonal honeycomb aperture is within 5 to 15 mm, and the fillet radius is within 0.4 to 1.2 mm.