In this study a process of dying cotton fabrics 100% was carried out by direct dye Solophynel GLE Yellow and after that it was treated by cationic softening agent for improving the fastness to washing and rubbing for the fabrics which were dyed by direct dyes .we increased the molecular weight after absorbing it on the cellulosic fiber and the result is decreasing the solubility of the dye in water and increasing the fastness to washing and rubbing . and after that we carried out the washing and friction tests and evaluated the results.