Numerical control milling machine convenient to fold and contract

The invention discloses a numerical control milling machine convenient to fold and contract. The numerical control milling machine comprises a base, wherein first control bolts are installed on the inner wall of the base; the first control bolts are connected to the left end and the right end of the inner wall of the base through bearings correspondingly; the left ends of the first control bolts penetrate through the base to be welded with rotating handles; the outer walls of the first control bolts are sleeved with fixing blocks; the front ends of the fixing blocks are fixedly connected withthe base through connecting rods; the outer walls of the left ends of the first control bolts are sleeved with belt wheels; the outer walls of the belt wheels are connected with the belt wheels on theouter walls of the other first control bolts through belts; the right end of the base is sleeved with a threaded sleeve in a threaded mode; a first movable rod is fixedly welded to the upper end of the threaded sleeve; and a sliding groove is formed in the inner wall of the right side of the first movable rod. According to the numerical control milling machine, the first control bolts and secondcontrol bolts are arranged, so that the position of a second movable rod can be adjusted and contracted, and then the space occupied by machining tools on the numerical control milling machine is reduced.