Chitosanextracted from natural products has gained tremendous attention in the fieldofadsorption and separation due to its inherent biocompatibility and potential applications. In this research, we synthesizedanew typeofsphericalchitosanadsorbent(SCA) by controlling the mass transfer rateofthe entanglementofthe polymer chains in the recombination process. This SCA isahighly crystalline polymer material with outstanding mechanical strength, high adsorption capacity,aporous surface and suitable particle size distribution. The valueofthe sphericityofattritionofthis SCA was 89.8%, which is the same as thatofthe commercial macroporous resin withapolystyrene matrix. The X-ray diffraction (XRD) patterns and differential scanning calorimetry (DSC) curves showedasignificant change from powder tosphericalstructure and confirmed that the SCA is highly ordered and crystalline. Optical microscopy (OM) and scanning electron microscopy (SEM) demonstrated that the SCA was composedofatightly stacked fiber structure, indicating the homogeneityofthe polymerization. The porous structureofthe surface providedachannel for mass transfer, which was indicated byatestofthe ion exchange capacity and the adsorption performanceofthe SCA with Cu(ii) as the adsorbed subject. The adsorption capacity was higher than thoseofall reported non-compositechitosanmaterials. Therefore, we have successfully synthesizedacompletely green, nontoxic and environmentally friendly adsorbing resin equipped with excellent mechanical properties and adsorption capacity for future applications in many new fields.