An editable projection display technology of free-form surfaces based on height information is proposed. The plane calibration technology based on fringes projection is used to establish the phase-height mapping table within the measurement range. The horizontal phase and vertical phase distributions on the free-form surface can be obtained by using the high-precision phase-shifting technique and the three-frequency temporal-phase unwrapping method. The geometry and intensity transfer relations between the projector pixels and the CCD camera pixels are established by the inverse fringe projection technology. By this display technique, the expected encoded image based on its height information can be projected on the free-form surface to realize an editable projection of high information and a 3D display. Some examples, such as the contour and the pseudo-color encoding projection on free-form surfaces the dynamic projection of glacier snowline variation and the add of simulation entities are given.