The invention relates to the field of anti-explosion protection and particularly discloses an interlayer sandwich type foamed aluminum composite armor and a manufacturing method thereof. The interlayer sandwich type foamed aluminum composite armor comprises a high-elasticity steel plate of which the elasticity limit strength is higher than 420MPa and the elongation at break is larger than 25%, the high-elasticity steel plate is provided with a first surface and a second surface opposite to the first surface, the first surface is provided with a first structure net, and the second surface is provided with a second structure net. The interlayer sandwich type foamed aluminum composite armor further comprises first foamed aluminum, a first metal plate and a back plate which are sequentially overlapped outwards from the first surface, and further comprises second foamed aluminum, a second metal plate and a front plate which are sequentially overlapped outwards from the second surface. The interlayer sandwich type foamed aluminum composite armor has the characteristics of being provided with a high anti-bullet break preventing piece and having explosive shock wave preventing capacity, and can meet the vehicle light weight requirement.