The influence of the phase assemblag e of precursor powder on microstructures and the properties of Bi (Pb)-2223/Ag tapes has been studied.The phase assemblage was controlled by changing the final c alcination temperature.The r esult s show that a precursor powder containing mainly the Bi (Pb)-2212ph ase and some other second phases which include(Sr,Ca )CuO and Ca 2 PbO 4 phase,and without any2201and 2223phases is considered a g ood choic e for the fabrication of hig h J c Bi (Pb)-2223/Ag tapes.Accordingly,calcination of the precursor pow der just below the form ation temperature of 2223phase is th e most favorabl e.A maximum critical current density of 12kA/cm 2 was obtained.