A print element board comprising: a substrate provided with a first surface and a plurality of terminals arranged along a first side of the first surface, in which an angle at a first peak located at a first end of the first side is smaller than an angle at a second peak located at a second end of the first side; a plurality of recording element arrays provided on the first surface, in which a plurality of printing elements are electrically connected with the plurality of terminals for recording, an ejection port forming member laminated on at least a portion of the first surface of the substrate; and a plurality of ejection port arrays provided in the ejection port forming member, in which a plurality of ejection ports are arranged, wherein each ejection port is disposed corresponding to a printing element; wherein a distance between the first peak and a first terminal disposed closest to the first peak among the plurality of terminals is longer than a distance between the second peak and a second terminal disposed closest to the second peak among the plurality of terminals, and the plurality of terminals is disposed on the first side of the first surface where no ejection port forming member layer is provided; wherein, each of the ejection port arrays is arranged along a direction where the plurality of terminals is arranged, wherein, the first surface is parallelogrammatic in shape, and wherein, in a case that the print element board is viewed in plan view, the first terminal is disposed nearer to the second peak than an imaginary line which passes a third peak located diagonally across the second peak of the first surface and perpendicularly crosses the first side and at least one ejection port positioned on an end portion of some of the ejection port arrays is nearer to a side of the first surface between the first peak and the third peak than the imaginary line. a substrate provided with a first surface and a plurality of terminals arranged along a first side of the first surface, in which an angle at a first peak located at a first end of the first side is smaller than an angle at a second peak located at a second end of the first side; a plurality of recording element arrays provided on the first surface, in which a plurality of printing elements are electrically connected with the plurality of terminals for recording, an ejection port forming member laminated on at least a portion of the first surface of the substrate; and a plurality of ejection port arrays provided in the ejection port forming member, in which a plurality of ejection ports are arranged, wherein each ejection port is disposed corresponding to a printing element; wherein a distance between the first peak and a first terminal disposed closest to the first peak among the plurality of terminals is longer than a distance between the second peak and a second terminal disposed closest to the second peak among the plurality of terminals, and the plurality of terminals is disposed on the first side of the first surface where no ejection port forming member layer is provided; wherein, each of the ejection port arrays is arranged along a direction where the plurality of terminals is arranged, wherein, the first surface is parallelogrammatic in shape, and wherein, in a case that the print element board is viewed in plan view, the first terminal is disposed nearer to the second peak than an imaginary line which passes a third peak located diagonally across the second peak of the first surface and perpendicularly crosses the first side and at least one ejection port positioned on an end portion of some of the ejection port arrays is nearer to a side of the first surface between the first peak and the third peak than the imaginary line.