Printing device and printing method

The invention relates to a printing device and a printing method. The printing device comprises a supporting base. The scraper adjusting mechanism is arranged on the supporting seat, and the scraper adjusting mechanism comprises a connecting assembly frame connected with the supporting seat and a plurality of adjusting units arranged on the connecting assembly frame in a sliding mode; the screen printing plate rotating mechanism is rotationally arranged on the supporting seat, and the screen printing plate rotating mechanism comprises a screen printing plate unit and a to-be-printed product transferring mechanism and is rotationally arranged on the supporting seat; the to-be-printed product transferring mechanism comprises a transferring unit and a control module, and is electrically connected with the adjusting unit; when a product to be printed is printed, the control module adjusts the multiple adjusting units in the scraper adjusting mechanism through the control module to enable the multiple adjusting un