The invention relates to a high-performance water output device used for an auxiliary machine container. Because large equipment needs to be provided with a large fed water outlet device so as to control outlet flow velocity of fed water, inconvenience is brought to welding of a pipeline on site, and adverse effects are caused on safe and economical operation of the equipment. The high-performance water output device comprises an impingement plate (1) which is welded to a supporting pipe (2), the supporting pipe (2) is welded to a perforated plate (3), the perforated plate (3) is round and welded to the upper portion of a cross plate (4), a tapered connection pipe (6) is welded to the lower portion of a container barrel, the cross plate (4) is welded inside the tapered connection pipe (6), and a guiding device (5) is of an annular structure and is respectively welded to the upper portion of the tapered connection pipe (6) and the container barrel. The high-performance water output device is a fed water outlet device used for a pressure container in the power station industry and the chemical industry.