The amidoximed polyacrylonitrile fiber (denoted as AO-PAN) was used to coordinate with five metal ions including Fe3+ , Cu2+ , Co2+ , Ce3+ and La3+, respectively, to produce the amidoximed PAN fiber-metal complexes. Coordinating kinetics and isotherm of AO-PAN with metal ions were mainly studied and effect of initial concentration and temperature on coordinating capacities of AO-PAN to metal ions was also examined. The results indicated that the coordination processes for five metal ions was found to fellow the pseudo-first-order equation, and coordinating isotherm of the metal ions with AO-PAN is consistent with Langmuir and Freundlich isotherm equations. Increasing the initial concentration of metal ions and higher temperature leads to an enhanced metal ion coordinating capacities. Moreover, reaction rate constants of five metal ions with AO-PAN increase with the elevation of temperature, and are ranked in this order: Fe3+ > Cu2+ > Co2+ > Ce3+ > La3+ at the same condition, but their activation energy shows a reverse trend. The value of △H0>0, △S0 >0, △G0
