Hydration administration system comprising: a console for mounting on an intravenous support (84); a first fixation (90) extending from the console (34) to hang a urine collection bag (52); a first weighing device in the console sensitive to the first fixation to weigh the urine collection bag (52); 3 a second fixation (92) extending from the console to hang a source of hydration fluid (27) in an infusion bag (24); a second weighing device in the console sensitive to the second fixing (92) for weighing the infusion bag (24); an infusion pump (22) integrated in the console and configured to pump hydration fluid (27) from the infusion bag (24); a controller in the console (34), sensitive to the first and second weighing devices, and configured to control the perfusion pump (22) to hydrate the patient based on the excretion of urine (26) from the patient; an infusion set (200) color-coded and / or numbered to connect to the infusion bag (24) and including an intravenous needle connector (204) and a pressure transducer leg (230) for interconnecting a pipe of the equipment perfusion (200) to a pressure transducer on the console (34); and a urine collection equipment (210) encoded with a color and / or a different numbering from the perfusion equipment (200), the urine collection equipment intended to be connected to the urine collection bag (52) and including a catheter connector (212); and a system priming device (310) having: a connector (312) configured to receive the intravenous needle connector (204) of the infusion set (200), and an adapter (314) to connect to the connector (312) and configured to receive the catheter connector (212) of the urine collection equipment (210) to send the hydration fluid (27) that is in the infusion bag (24) to the urine collection bag (52).Sistema de administración de hidratación que comprende: una consola para montar en un soporte intravenoso (84); una primera fijación (90) que se extiende desde la consola (34) para colgar una bolsa