A toilet bowl pressure flushing system with shock wave flushing is a compact rigid unit made by a fixed connection of: a rigid body of a pressure module containing at least one gas hydraulic accumulator and one downstream flow tank connected by at least one connection opening; an overflow pipe; an automatic hydraulic valve module comprising a core, an inlet and outlet elements of the automatic hydraulic valve, where the inlet element of the automatic hydraulic valve is connected to the outlet of the flow tank and where the outlet element of the automatic hydraulic valve feeds into the overflow pipe. At the same time it comprises an inlet from the pressure water supply that feeds into the rigid body of the pressure module or into the automatic hydraulic valve module.