The invention discloses an in-mold stick label with a colorful effect and a production device thereof. The in-mold stick label comprises a transparent protective layer, a printing layer, a colorful film layer and an attaching layer which are sequentially bonded with one another, and the side, away from the colorful film layer, of the attaching layer is matched with the outer surface of a bottle body/injection molding part. The in-mold stick label has the following beneficial effects that the in-mold stick is rich in color, and an excellent visual effect can be brought to the bottle body or theinjection molding part during in-mold labeling.