A CNC tool intelligent tool setting monitoring method, including step S1 - type change operation and step S2 - automatic tool setting, wherein step S1 involves installing a fixed tool setting instrument, setting the coordinates of the tool setting instrument, tool setting axis tool setting and program Setting, step S2 includes step S2.1 - replace the tool and install it on the spindle, select the tool setting switch parameter in the macro parameter and change it to 1, step S2.2 - select the tool to be set, and set the corresponding macro parameter Change it to 1 to complete the tool setting operation, step S2.3 - press the cycle start button of the processing program. The system is easy to debug. When changing the model, you only need to find the difference between the workpiece and the tool setting instrument. The macro program is used to judge the mechanical coordinates. For CNC machining parts, automatic tool setting, automatic tool compensation, and tool wear detection can be realized when the tool is changed. , Tool damage and fracture detection, to eliminate the loss of quality cost caused by tool errors, reduce the time for tool setting of parts, and easy to operate.