A lifting mechanism with support function includes pivot arm component composed of a first pivot arm and a second pivot arm parallel to each other. The first and second pivot arms each have two ends thereof pivotally connected to a fixation joint and an active joint respectively, and the pivotally connected points connecting the first link, the second link, the fixation joint and the active joint jointly define a parallelogram. One end of an adjustable damper pivotally connects to the pivot arm component, and the other end thereof pivotally connects to the fixation joint or the active joint via an adjustment component, so the adjustable damper can be controlled to extend/retract or be locked; the adjustment component includes a first pivot seat capable of relatively moving to change the support angle of the adjustable damper to adjust the damping support force provided from the adjustable damper.