A skin treatment device includes: a shell body a pressing bar, formed with a first end mounted in the shell body and a second end protruded from one distal end of the shell body and formed with a squeezing part having a through hole a bactericidal lamp, installed in the shell body and including a bactericidal light source capable of generating plural bactericidal light beams passing the through hole and a cover member, disposed at one distal end of the shell body, served to cover the second end and including a light condensing lens disposed corresponding to the through hole and the bactericidal lamp. Accordingly, when the bacteria existed on the skin or in skin pores are exposed to the bactericidal light beams, the bacteria can be naturally deceased.
