The invention discloses a three-dimensional loom structure for large continuous production. The three-dimensional loom structure comprises a rack, wherein a jacquard is in screw connection with the right side of the top end of the rack; a weft insertion mechanism is in screw connection with the right side of the bottom end of an inner cavity of the rack; an intelligent control system is in screw connection with the lower right corner of the front side of the rack; a let-off mechanism is in screw connection with the bottom end of the left side of the rack and comprises a base, stand columns arewelded at four corners of the top end of the base, a top plate is welded at the top ends of the stand columns, the right sides of the base and the top plate are in screw connection with the bottom end of the left side of the rack; guide rods are clamped on the front sides and the rear sides of inner cavities of the base and the top plate in the left-right direction; substrates capable of moving left and right are connected to the outer walls of the guide rods in a sleeving manner. According to the three-dimensional loom structure for the large continuous production, automatic control of the let-off mechanism can be realized, degree of automation is high, production efficiency is greatly improved, and popularization is facilitated.