The invention discloses a light-weight packaging composite armor and a manufacturing process thereof. The light-weight packaging composite armor structure takes metal, ceramic and cermet composite structures and other structures as an inner armor, takes ultra-high molecular weight polyethylene fiber reinforced composite materials as outer packaging and adopts an integrated molding process that double-strand fiber prepreg is used for alternately and orthogonally winding, wrapping and packaging the inner armor and the inner armor is placed in a mold for hot pressing molding. According to the light-weight packaging composite armor and the manufacturing process thereof, the inner armor is packaged by the ultra-high molecular weight polyethylene fiber reinforced composite materials, and the armor bulletproof performance is effectively improved under the condition that the areal density is not obviously increased. Meanwhile, different inner armor can be selected according to the protection object and protection level, the cooperative action of various bullet-proof mechanisms is achieved to capture the projectile. The preparation method of the integrated hot-press molding after the two-strand alternating orthogonal winding packaging is adopted, is simple in process and low in cost, and large-scale production of light-weight composite armor with different specifications and sizes is facilitated.