Cu/n-TiO
2/PBO composite fibers were prepared with nano-TiO
2 deposited on PBO fibers by dipping,
and then Cu deposited on nano-TiO
2 thin films by electroless plating. The main effective factors on the nano-TiO
2 and Cu depositing rates were studied. The results show that the concentration ratio ofnano-TiO
2 and coupling reagent works as the key effective factor on the nano-TiO
2 depositing rate. Thenano-TiO
2 is well deposited on PBO fibers when the concent ration ratio is 1:1. 2. The main effective factors on the Cu depositing rate are bath composition, reaction time and reaction temperature. Cu is well deposited on then-TiO
2/PBO composite fibers under the condition of CuSO
4·5H
2O 12 g ·L
-1,KNaC
4H
4 O
6 8 g·L
-1,HCHO 6 mL ·L
-1, NaOH 10 g·L
-1, reaction temperature 50℃ and reaction time 20 min.