Abstract: Pressure drop, dynamic and static liquid holdup were determined by U-tube pressure manometer,volumetric and gravimetric method for fiber - packed trickle - bed reactors operated at room temperature and atmospheric pressure with gas and liquid mass flowrate varying from 0. 052 to 0. 25kg/(m2·s) and 0. 32 to 2. 56kg/(m2 · s) respectively. The ef- fects of fluid flowrate, bed voidage,fiber property and packing method on pressure drop and liquid holdup were discussed. Correlations for pressure drop and liquid holdup were presented as follows: pressure drop fig=14. 120Ret0.252Reg-1.471 where fig= δlgDeσg/(2Gg2), De = 4ε/C[(1-ε)aP] dynamic liquid holdup Hd = 0. 303Ret0.506Reg-0.141(Gagε)-0.128 static liquid holdup Hs = 0. 512ε-1.46