PURPOSE: A beam unit for a door impact beam is provided to prevent the beam unit from being deformed due to external force by forming a shock support unit having aluminum foam between an impact beam and the inner center surface of a door outer panel. CONSTITUTION: A beam unit for a door impact beam comprises a shock support unit. The shock support unit is formed between an impact beam(3) and the inner surface of the center of a door outer panel(7) and absorbs shock transferred from the outer pane. The shock support unit is composed of a support plate(13) and a shock absorbing member(11). The support plate is attached on the center of the impact beam through an adhesive sheet(S). Both surfaces of the shock absorbing member are attached on the support plate and the inner surface of the outer panel.
