This central water softener takes intelligence, efficient water softening and easy maintenance as its core. The built-in intelligent microcomputer chip can automatically adjust the softening scheme according to water quality; it also periodically checks the product state and the quantity of the consumables, with the information visually showed on the touch screen. The self-developed valve, coupled with the poly-grid water splitter and the innovative operation mechanism, enables water to be efficiently softened, ensures homogeneous water, and reduces water/salt/energy consumption.