Abstract: Objective To analyze and predict the structure and characteristics of calcineurin Bin Taeniasa ginata(T.saginata)by bioinformatics analysis in order to guide the expermiental research for its biological function and application.Methods With analyzing tools of bioinformatics,the gene of calc ineur in B from the T.sa ginata full length cDNA plasmid library was recognized and the new gene was analyzed with bioinform atics and submitted to GeneBank.Results The gene is 510 bp in length with a coding region of 141-650 coding 170 aminoacids.It is a complete full length gene compared with that of the homolog ues in GenBank.The predicted molecular weight of calcineur in B gene is 19119.3Da.The prote in contains no transmem brane region and subce llular location sequence.It has four "EF-hand" calcium binding regions.Conclusion The cDNA sequence encoding calc ineur in B gene is screened from cDN A library of adult Taeniasa ginata by bioinformatical method.The structure and characteristics of Taeniasa ginata of the gene and prote in of calcineurin Bgene are obtained.