The invention discloses full-automatic abrasive cloth flap disc machining equipment, which comprises a frame; a feeding and discharging storage mechanism of a flap disc, a conveying rotary device, a flap disc autorotation mechanism, a glue dripping device, a slice mounting device and a reshaping mechanism are arranged on the frame; and when the machining equipment works, the flap disc is fetched and placed on the flap disc autorotation mechanism arranged on the conveying rotary device by the feeding mechanism of the flap disc, a small turntable and the flap disc are driven by a main turntableto rotate below the glue dripping device, the glue dripping device drips glue to the flap disc, then the main turntable continuously rotates to drive the flap disc coated with the glue to rotate below the slice mounting device, the slice mounting device slices an abrasive cloth tape, the slices are stuck to the flap disc coated with the glue, the main turntable continuously rotates to drive the flap disc stuck with abrasive cloth sheets to rotate below a reshaping device, the flap disc is reshaped by the reshaping device, finally, the main turntable drives the finished flap disc to rotate below the discharging storage mechanism, the finished disc is grabbed and discharged by the discharging storage mechanism, and machining of the whole process is finished.