A kind of colter includes a piece of oblique moldboard and a link block. The oblique moldboard includes a piece of plate ontology with a upper end and a lower end, which is a piece of from the upper end toward the lower end flat plate that gradually forward downward inclination extends. The link block is extended from the plate ontology of the oblique moldboard toward Hou. By the inclined tabular design of the plate ontology, it can really maintain to plough native effect, reduce the program of polishing trimming, so as to what use.一種犁頭,包含一片斜犁板,及一個連接塊。該斜犁板包括一片具有一個上端及一個下端的板本體,該板本體為一片由該上端往該下端逐漸向前下方傾斜延伸的扁平板片。該連接塊由該斜犁板之該板本體往後延伸。藉由該板本體呈傾斜平板狀設計,確能維持犁土效果,減少打磨整修的程序,以便於使用。