The universal milling machine is suitable for using various rod milling cutters, circular milling cutters, and angle milling cutters to mill planes, bevels, grooves, etc. If milling machine accessories such as universal milling head, circular table, and indexing head are used, the processing range of the machine tool can be expanded. The machine tool has sufficient rigidity and power, has strong processing capabilities, and can perform high-speed and heavy-load cutting work and gear processing. Suitable for heavy and large machinery processing such as mold special steel processing, mining equipment, and industrial equipment. The worktable of the universal milling machine can rotate 45° to the left and right respectively. When the worktable is rotated at a certain angle and the indexing head attachment is used, various spiral surfaces can be processed. The three-way feed screw of the universal milling machine is a trapezoidal screw or a ball screw.