Composite wound dressing device by using be enclosed in wound dressing member or on micropump system promote the healing of wound. The micropump system includes micropump, which applies subatmospheric pressure to wound, to siphon away wound fluid or diffusate from wound bed in the case where not needing troublesome external vacuum source. Therefore, wound dressing and micropump system are portable, this makes patient movable, this can not achieve when using external vacuum source. Any time of patient over the course for the treatment of all needs not be under limitation, while removing diffusate from wound.
