Sticker system of sticking machine for bar code on test tube

The utility model discloses a sticker system of a sticking machine for a bar code on a test tube. The sticker system comprises a frame body, a printer, a pick rubber roller and a compression roller mechanism, wherein the frame body is provided with an opening through which the test tube can be placed; a bar code outlet of the printer faces a tube body of the test tube placed at the opening; the pick rubber roller is rotationally connected onto the frame body; the axis of the pick rubber roller is parallel to that of the test tube placed at the opening; the compression roller mechanism is cooperated with the pick rubber roller, and is used for compressing the test tube and rotating the test tube to stick the bar code on the test tube. The compression roller mechanism is cooperated with the pick rubber roller, so that the test tube is rotated, and the printed bar code can be stuck on the test tube; through the arrangement of a compression electromagnet and a reset spring, a compression roller seat can compress the test tube or enable the test tube to be in non-compression state; in the compression operation, manual operation is not needed, so that the working efficiency is improved greatly; through the arrangement of a pop-up electromagnet, the test tube on which the bar code is stuck can be separated from the opening.