Disclosed is an automatic program forming apparatus which automatically forms a part program for extracting the contour measurement position of a measurement object and the measurement condition data from two-dimensional CAD graphic information, and for calculating the XYZ coordinates of the approach position, entering position, etc. of a probe of a three-dimensional contour measurement device at the time of the contour measurement on the basis of the extracted contour measurement position and measurement condition data to thereby control the three-dimensional contour measurement device; and which automatically forms a test program for simulating the measurement operation of the part program in advance.