Abstract: In order to study the absorption properties of Seacell fibers for copper and zinc ions, this paper used aqueous solutions of copper chloride and zinc sulphate to treat Seacell fibers under various treatment time and temperature. The absorption capacities for copper and zinc ions were determined after measuring the changes of the copper and zinc ion concentrations in the treatment solution. Results showed that because of the alginate rich seaweed particles dispersed in the fiber structure, Seacell fibers have good absorption properties for both copper and zinc ions, with the equilibrium absorption capacities for copper and zinc ions at about 7 mg/g and 2 mg/g respectively. The absorption of copper and zinc ions by Seacell fibers is a relatively fast process, with most of the absorption completed within 30 min. It is possible to prepare Seacell fibers containing different amounts of copper and zinc ions by controlling the copper and zinc ion concentrations in the treatment solution.