Abstract: More than ten of the imitations and tens of the chicken-blood stone samples newly collected from Changhua are observed with naked eye and microscope,including the contrastive testing of the thinned sections,physical properties and mineral compositions.The results show that there are clear differences on the "ground","blood" and compositions between the chicken-blood stones and the imitations,which could be used for identification.The differences of the physical properties could be used as the assistant proofs between the chicken-blood stones and the imitations.