Abstract: An apparatus for automatically delivering hemodialysis solution to a plurality of hemodialysis machines includes a plurality of supply tanks adapted to be fluidly communicated with a corresponding one of the hemodialysis machines. Each of the supply tanks has a bottom portion provided with a connecting port. A main tank contains the hemodialysis solution therein and is formed with an outlet port. A solution delivery system includes a main delivery pipe which has an inlet section connected to the outlet port of the main tank and provided with an electromagnetic delivery control valve and a delivery pump, and a plurality of main branch pipes. Each of the main branch pipes has an input portion connected fluidly to the main delivery pipe and an output portion connected fluidly to the connecting port of a respective one of the supply tanks. Each of the main branch pipes is provided with an electromagnetic main branch valve.