The adsorption of strontium from aqueous solution with heavy metal chelate fiber was studied. The effects of several experimental parameters such as pH, dosage, temperature, contact time and initial concentration of strontium on adsorption efficiency of strontium were investigated. The adsorption mechanism of strontium ions by ZH heavy metal chelating fiber was discussed by contemporary analytical testing methods such as SEM, SEM-EDS and FTIR analysis. The results indicated that, under the conditions pH=7.0, biomass dose=2.0 g/L, the initial concentration of strontium ions=50.0 mg/L, and adsorption time=4 h, the fibers exhibited the best biosorption capacities. The biosorption equilibrium indicated that the process was mainly based on monolayer adsorption combined with multi-molecular layer adsorption. The results indicated that the maximum adsorption capacity of Sr²⁺ by ZH heavy metal chelating fiber was 26.22 mg/g. The equilibrium sorption capacity of strontium was determined from the Langmuir equation, and the dynamic adsorption process conformed to the secondary dynamic model. FTIR analysis found that Sr²⁺ was coordinated to -NH₂ and -COOH on the surface of fibers, and -CH₂- and C=CH₂ were involved in the adsorption. DES analysis indicated that there was ion exchange between Sr²⁺and Na⁺, Ca²⁺ on fibers.