Abstract: In order to prepare bioactive functional fibers,the German company Zimmer blended seaweed particles with the spinning solution during the solvent spun process for cellulose fibers,and dispersed the seaweed particles in the resultant Seacell fibers.This article introduced the principles for making Seacell fibers and analyzed the types,sources,composition and bioactivities of seaweeds,as well as the absorption properties of the seaweed particles for silver ions during the activation process.