An applicator capable of adjusting the length of a dressing is a base module and a dressing module mounted in a body, and the dressing module is coupled to the base module. The dressing module comprises a dressing roll, a tape roll, a recovery roller and a pressing assembly. The tape of the tape roll is combined with the dressing tape of the dressing roll, and the bonding end of the tape and the dressing tape moves through the pressing assembly and out of the body, such that the dressing roll, the tape roll and the recovery roller rotate synchronously. The release film of the dressing roll is separated from the dressing tape and wound up on the recovery roller. In this way, it is possible to change the dressing module conveniently and quickly and conveniently by using the length at its own discretion and by means of a modular structure.一種可調整敷料長度的敷料機,係一基座模組及一敷料模組安裝於一本體的內部,且該敷料模組係結合該基座模組。該敷料模組包含一敷料捲、一膠帶捲、一回收滾軸及一壓合組件。該膠帶捲的膠帶結合該敷料捲的敷料帶,且該膠帶與該敷料帶的結合端移動通過該壓合組件並穿出該本體,如此該敷料捲、該膠帶捲及該回收滾軸同步轉動,使該敷料捲的剝離膜與該敷料帶分離後捲置於該回收滾軸。藉此達到能夠隨自行決定使用長度,以及藉模組化結構形式而方便快速及簡便的進行更換敷料模組。