To provide a wiper and its wiper head which can select and replace the corresponding wiper head of a vehicle and improve usability. A wiper includes a strip assembly, a bottom seat connected to the strip assembly, and a wiper head detachably coupled to the bottom seat, the bottom seat having two coupling portions and two engaging holes. the two engaging holes pass through the two side walls of the bottom seat respectively, the wiper head has a connecting seat and a connecting portion, the connecting portion is connected to the connecting seat, and the connecting portion rotates; The coupling seat has two fitting parts and two elastic arms, the two elastic arms are respectively connected to the two fitting parts, and the two fitting parts are connected to each other. The parts are respectively connected to the two connecting parts, and the two elastic arms are respectively engaged with the two engaging holes. [Selection drawing] Fig. 1【課題】対応する車両のワイパーヘッドを選択して交換することができ、使用利便性を向上させるワイパー並びにそのワイパーヘッドを提供する。【解決手段】ワイパーは、ストリップアセンブリーと、ストリップアセンブリーに連接する底座と、前記底座に着脱自在に結合するワイパーヘッドとを含み、前記底座は二つの結合部と二つの係合孔を有し、前記二つの係合孔はそれぞれに底座の二つの側壁を貫通し、前記ワイパーヘッドは結合座と連接部とを有し、前記連接部が結合座に結合され、前記連接部は回動アームに結合するのに用いられ、前記結合座は二つの嵌合部と二つの弾性アームとを有し、前記二つの弾性アームが前記二つの嵌合部にそれぞれ連接され、前記二つの嵌合部は前記二つの結合部にそれぞれ結合され、前記二つの弾性アームは二つの係合孔にそれぞれ係合される。【選択図】図1