The invention discloses a herringbone corrugated plate structure for a welding plate type heat exchanger, which comprises distributing diversion areas and a heat transfer area, wherein the triangle distributing diversion areas are arranged at the upper end and the lower end of a plate, and the rectangular heat transfer area is arranged in the middle; when the plates are assembled, supporting pieces are not needed to be additionally arranged between the plates, and the hypotenuses of the triangle distribution areas far away from the rectangular heat transfer area are connected with each other by a welding method after the plates are assembled; and the two sides of the plate are respectively used as runners of different media, and the flow directions of the media at the two sides of the plate are opposite. The invention has simple structure, even fluid distribution and no dead zone.