Rinsing system and rinsing method for cold-rolled strip steel pickling

The invention relates to a rinsing system and rinsing method for cold-rolled strip steel pickling. The rinsing system comprises a desalted water tank communicating with a fourth double-spray pipe, wherein a fourth circulating pump communicates with a fourth three-spray pipe through a fourth pipeline and communicates with a third double-spray pipe through a fourth branch pipeline; a third circulating pump communicates with a third three-spray pipe through a third pipeline and communicates with a second double-spray pipe through a third branch pipeline; a second circulating pump communicates with a second three-spray pipe through a second pipeline and communicates with a first double-spray pipe through a second branch pipeline; a first circulating pump communicates with a first three-spray pipe through a first pipeline and communicates with a flushing water tank through a first branch pipeline; a sixth circulating pump is arranged between the flushing water tank and a deacidification and regeneration room; and