The spirulina was coated with silver by electroless deposition technique so as to fabricate micro soft-core spring having light-weight and good conductive property.In order to further reveal the elastic property of such micro spring particles,they were mixed into Polydimethylsiloxane(PDMS)uniformly,then the mixture was spin-coated on the silicon wafer,during which the micro spring particles tends to align along the peripheral direction.After the film was solidified,a strip was clipped and the tensile test was carried out with the strip.