The invention discloses a metal cutting machine tool convenient to adjust. The metal cutting machine tool comprises a base, a placing table is arranged above the base, two supporting plates are symmetrically arranged between the placing table and the base, storage boxes are fixed to the opposite side walls of the two supporting plates, two driving boxes are fixedly arranged at the lower end of theplacing table, first driving motors are fixed in the driving boxes, turbine fans are connected to the tail ends of output shafts of the first driving motors, air suction ports of the turbine fans communicate with air suction pipes, the ends, away from the turbine fans, of the air suction pipes penetrate through the driving boxes and the placing table to communicate with air suction covers, and the air suction pipes communicate with the storage boxes through communicating pipes. The metal cutting machine tool convenient to adjust is convenient to adjust and applicable to cutting metal with different thicknesses, working efficiency is improved, metal fragment treatment is timely, follow-up cutting operation is facilitated, and metal cutting quality is improved.