Abstract: An articulator including: a lower member in which an attachment plate and a body can be firmly and easily attached and detached by fitting a rear coupling part to a housing part without using a plaster, the attachment plate can be easily separated by first fixing pins protruding downward from the body, and the attachment plate and an oral model can be accurately cut by cutting marks, tooth center marks, and a round groove on the attachment plate and tooth center marks on the body; and an upper member where an impression of counter-teeth corresponding to the oral model attached to the lower member, in which the lower and upper members are rotatably connected by connecting mechanisms. Accordingly, the manufacturing process can be simplified, the actual motion of jawbones can be achieved, and the height between the upper member and the lower member can be ensured by a support unit.