The invention provides a large-sized large-caliber cylindrical container made of a thermoplastic composite material. The large-sized large-caliber cylindrical container comprises a bucket body (1), a structural connection sealing strip (2) and a bucket bottom (3), and is characterized in that the structural connection sealing strip (2) is arranged between the bucket body (1) and the bucket bottom (3), and integrated with the bucket body (1) and the bucket bottom (3) through hot-melt welding. Compared with a conventional rotational-molding pure plastic bucket, the large-sized large-caliber cylindrical container provided by the invention is smaller in thickness and lighter in weight; meanwhile, as the large-sized large-caliber cylindrical container is made of the glass fiber reinforced composite material, the fiber toughness and rigidity occur on the surface of the large-sized large-caliber cylindrical container when the surface layer of the large-sized large-caliber cylindrical container is impacted by external force; the impact resistance and the corrosion resistance of the large-sized large-caliber cylindrical container are both superior to those of the conventional plastic bucket; and the large-sized large-caliber cylindrical container is convenient to transport and store, high in manufacturing efficiency and suitable for large-batch production.