a manufacturing method for an ink jet recording head , includes preparing a recording element substrate provided with energy generating means for generating energy for ejecting liquid , two opposing sides opposed to each other , an electrode portion disposed along a side sandwiched between the opposing sides to supply electric power to the energy generating means ; preparing an electric wiring member provided with wiring leads for supplying electric power to the electrode portion from an outside , the electric wiring member being provided with sides opposed to the opposing sides of the recording element substrate and to the side sandwiched between the opposing sides ; forming an electrical connecting portion at least one of the opposing sides by connecting the electrode portion and the wiring lead with each other ; providing a gap l 1 between one of the opposing sides of the recording element substrate and the side of the electric wiring member opposing the one of the opposing sides , and providing a gap l 2 between the other one of the opposing sides and the side of the electric wiring member opposing the other one of the opposing sides , wherein the gap l 1 is larger than the gap l 2 , and wherein the electrical connecting portion is interposed between the gap l 1 and the gap l 2 ; and supplying a sealing material in a direction from the gap l 2 toward the gap l 2 through the electrical connecting portion .