Full-automatic PCB surface mounting machine and surface mounting method

The invention relates to a full-automatic PCB surface mounting machine and a surface mounting method. The surface mounting machine comprises a component feeding module, a component stripping and surface mounting module, a PCB feeding module, a PCB discharging module and a control module. The component feeding module comprises at least one correction stock bin; the correction bin comprises at least two limiting vertical plates, at least two independent lifting units and a driving unit used for driving the independent lifting units to act, height sensors are arranged at the tops of the limiting vertical plates and used for detecting height information of one side of the sheet stock, and the top ends of the independent lifting units are supported on the opposite side portions of the bottom of the sheet stock correspondingly; the driving unit drives the independent lifting unit to do lifting motion according to the height information, measured by the height sensor, of the side portion of the sheet material, and h