To provide a numerical controller having load display function with which the load control by the correction of cutting conditions can be performed in a short time by displaying the load graph of a feeding axis and a main axis for each working process.

A numerical control information executing part 15 outputs block information PD by reading numerical control information BLK out of a numerical control information storage part 1 block by block and analyzing it. Based on the block information PD, a working process detection part 13 discriminates the switching of working processes and when there is switching, a switching signal EVNT is outputted. Based on time information TM when the switching signal EVNT is outputted, a switching signal preparing part 14 prepares a symbol MRK showing the switching of working processes. A display control part 16 synthesizes the symbol MRK showing the switching of working processes with a load graph FIG and displays the result on a display device 12.