A numerical controller including an automatic display unit of a teach program includes a manual movement axis monitor unit for monitoring whether there is an axis moved by manual feed, a teach target program selection and determination unit for selecting and determining a teach program controlling the axis, and a teach block selection and determination unit for selecting and determining a teach point from a movement direction of the axis, and selecting and determining, as a teach block, a block in the teach program in which the teach point is an end point.