An ink jet print head has plural electrothermal converting elements for generating energy used to discharge an ink droplet, plural ink discharging ports arranged above the electrothermal converting elements and discharging the ink droplet, plural ink flowing paths respectively communicated with the plural ink discharge ports and internally including the electrothermal converting elements, a substrate for arranging the plural electrothermal converting elements in a columnar shape and having an ink supplying port constructed by a through port which is connected with the ink flowing paths and extends along an arranging direction of the electrothermal converting elements, and a discharging port plate having the ink discharge ports. The ink flowing paths are formed between the substrate and the discharging port plate by junctioning the discharging port plate onto the substrate. The ink jet print head further has a fluid resisting device of the ink flowing paths in which a side of the ink supplying port is opened in the vicinity of a communication portion of the ink flowing paths in an ink supplying port projecting are of the discharging port plate.