The invention discloses a movable maintenance trolley with a lifting foot support. The movable maintenance trolley comprises a base plate, a foldable guide rail device, a workbench and the lifting foot support. A plurality of trundles are installed on the bottom face of the base plate. The foldable guide rail device is fixed to the upper end face of the front portion of the base plate. The workbench is slidably arranged on the foldable guide rail device. The lifting foot support is installed on the base plate. The foldable guide rail device comprises a pair of foldable guide rails and a limiting device. The limiting device is fixed to the upper end face of the front portion of the base plate and located between the pair of foldable guide rails. The foldable guide rails can be stored on the workbench in a foldable mode, and thus the occupied space of the trolley can be reduced. In addition, the workbench can move up and down along the foldable guide rails, and the stability of the workbench can be guaranteed through the lifting foot support. The movable maintenance trolley can adapt to repairing and maintenance of single equipment at different heights in a film photovoltaic production system, and accordingly the repairing and maintenance difficulty of the single equipment in the film photovoltaic production system is lowered.