The utility model belongs to the technical field of the electricity infrastructure technique and specifically relates to a prefabricated mould that bears down on one with adjustable, preset the piece including mould frame, adjustable baffle and movement joint for the movably one end that sets up in the mould frame of adjustable baffle of regional area is pour in the adjustment, and the region of pouring in the mould frame is equipped with the movement joint and presets the piece, during the movement joint presets and inserts foundation concrete before the foundation concrete initial set to extract before foundation concrete final set. The utility model discloses it just does benefit to technology quality control to make prefabricated plate construction speed improve greatly.