An ink jet recording head comprises a discharge port (3a) through which the ink is discharged, a liquid chamber (3c) for temporarily reserving the ink to be supplied to said discharge port (3a), a flow channel (3b) for connecting said discharge port (3a) to said liquid chamber (3c), and a substrate (1) having an element surface on which is disposed an energy generating element (2) for generating the energy with which the ink is discharged through said discharge port (3a), wherein said recording head is formed by fusing a structural member having a groove making up said flow channel (3b) corresponding to said energy generating element (2) with said element surface, and a cavity portion making up said liquid chamber (3c) with said element surface onto said element surface.