The invention discloses a large container ship wing bridge block integrated construction method. The method comprises the following steps that 1, a straight universal moulding bed is arranged, whereinthe straight universal moulding bed used for reverse integrated construction of superstructure wing bridge blocks and bridge deck blocks of a large container ship is arranged on a total configurationplatform; 2, steel plates are reversely laid, wherein with the deck surfaces as the reference surfaces, the steel plates used for construction of the left and right deck surfaces of the wing bridge blocks and the bridge deck blocks are laid on the straight universal moulding bed respectively, and a union melt welding way is adopted for welding. By means of the method, the situation of separate construction of the wing bridge blocks and total assembly of hoisting can be avoided, the turnover times of the blocks and the using number of gantry cranes can be reduced, the overall precision of theblocks is better controlled, the product quality is improved, the production cost is saved, and the production efficiency is improved. Aerial work can be avoided, the trouble that scaffolds are set upat a high altitude is omitted, and the operation safety is increased.