A plate heat exchanger with a plurality of separating walls stacked one above the other, which alternatingly define a first and second flow space for a first and second medium, includes at least one turbulence generator being positioned in at least one flow space, which comprises a plate with a number of parallel-running band-like rows of alternating elevations and depressions mutually connected by bridges, where the elevations and depressions of each row are shifted with respect to each immediately adjacent row, and where each row is provided with at least one transition area for the medium to pass to the immediately adjacent row, such that the depressions of each row are flow-connected with the immediately adjacent elevations of at least one immediately adjacent row. To achieve high heat transfer performance in a simple manner it is provided that the bridges of each row are essentially parallel and equally inclined relative to the separating walls, with an acute angle being formed between a separating wall and the bridges.