In this study, the non-formaldehyde crease-resist finishing of cotton fabrics using the polycarboxylic acid (BTCA、MA、SUA、CA) as cross-linking agent, and nanometer grade TiO2 compound Ag as catalyst under UV light reactive and has been investigated. The change of kinds and concentrations of cross-linking agents were studied and the effect of dry and wet wrinkle recovery angle, grafting yield (%), grafting efficiency (%), the strength rate of decrease (%), the whiteness rate of decrease (%), the softness rate of increase (%) and durable press rating were research. The result shows the effect of dry and wet wrinkle recovery angle, grafting yield (%) and the softness rate of increase (%) could increase with concentration of the cross-linking agents increase. Then grafting efficiency (%), the strength rate of decrease (%) and the whiteness rate of decrease (%) could decrease with the concentration of the cross-linking agents increase.