The invention discloses a resonant noise-reducing gantry processing center, which comprises a base, a main body of a resonant noise-reducing device, a support, an auxiliary device, a stabilizing device, a back plate, a gantry frame, a main body of a Y-axis sliding table, a workbench, an X-axis The main body of the slide table, the main body of the Z-axis slide table, the fixed seat and the tool. In the present invention, an auxiliary device is embedded in the front end of the base, and a transmission box is installed in the auxiliary device. The transmission element in the transmission box is driven by an independent motor, which drives the front end contact mechanism to protrude, and touches the connecting wall or supporting equipment. There are multiple sets of buffer columns installed, which also provide a certain buffering effect when the contact is stable, and effectively achieve stability; an adjustment mechanism is installed between the back of the contact mechanism and the transmission box, and a linkage is installed in the middle of the adjustment mechanism. The end is equipped with a steering piece, which can realize the multi-angle adjustment of the contact mechanism connected to the front end, which is convenient for the connection between the contact mechanism and the contact position at different angles.