In order to solve the problem of treatment and reusing of textile wastewater,the paper studied the feasibility of engineering of industrial water treatment and dye recycling which take the technique of ultrafiltration and nanofiltration membrane separation as the core according actual situation.The results showed that vat dye wastewater effluent treated by UF process can meet the water quality standard of dyeing mills water recycling;while the reactive dye wastewater can get better effect of dye recycling via nanofiltration.The separation process of UF+NF can evidently remove the pollutant of vat dye and reactive dye wastewater.The removal rate of SS , COD, turbidity and chromaticity color is up to 100%, 95.21%, 92.86% and 100% for vat dye wastewater,and that is up to 100%, 82.85%, 98.46% and 99.43% for reactive dye wastewater respectively. The separation process of UF+NF is fit to dye wastewater treatment and dye recycling of industry and is the development direction of resource processing of textile wastewater.