Abstract: The static absorption capacities of the sheath-core bicomponent composite cation exchange fiber for Zn2+、Cu2+ are determined. The absorption kinetics and the main factors affecting absorption capacities of Zn2+、Cu2+ are studied, and its chemical stability and regenerating property are probed. The results indicate that liquid film diffusion is its main controlling step. When the concentration is in the range of 0.005～0.2 mol/L, the adsorption for metal ions belongs to monolayer adsorption. The process of isothermal absorption can be described by Langmuir and Freundlich adsorption isothermal equation. The sheath-core bicomponent composite ion exchange fibers obtained have faster absorption rate for Zn2+、Cu2+. The maximal adsorption capacities for metal ions exceed 2 mmol/g. The best adsorption pH value for Zn2+、Cu2+ is at nearly pH value of 8.0～9.0. This type of ion exchange fiber has good absorption property and working stability to various of metal ions.