The invention relates to the technical field of wound debridement, and discloses a wound debridement pen which comprises a main body sleeve, a liquid storage mechanism and a rotating mechanism, wherein one end of the main body sleeve is provided with a rotating head, the liquid storage mechanism comprises a partition plate arranged in the middle of the main body sleeve, a liquid outlet is formed in the middle of the partition plate, one side of the main body sleeve is rotationally connected with the end of a rotating plate, and a first plug matched with the liquid outlet is arranged in the middle of the rotating plate; the rotating mechanism comprises a fixing rod arranged on the side, close to the rotating head, of the main body sleeve, the middle of the fixing rod is connected with the middle of a sliding rod, and the end, away from the device center, of the sliding rod is connected with the rotating head. According to the wound debridement pen, the second ejector rod pushes the sliding pipe to move downwards, so that the whole sliding pipe drives the rotating head to rotate, anesthetics are released through the drainage needle while the rotating head rotates, debridement and anesthesia are conducted at the same time, the whole device is more convenient to use, and the debridement effect is improved.