Ceramics of 0.36〔BiSc(1-x)GaxO3〕—0.64PbTiO3(x=0.001、0.003、0.005、0.008、0.01、0.015、0.02) are prepared by conventional solid state reactions when Ga2O3 is doped into 0.36BiScO3—0.64PbTiO3(BSPT64) system. The analysis results of X-ray diffraction reveal that Ga3+replacing Sc3+ does not change the perovskite structure of BSPT64. The dielectric and piezoelectric properties are investigated. The results show that BGSPT64-0.01 has an optimized characterization, i.e. its piezoelectric coefficient d33,planar coupling coefficient kp, remnant polarization Prand coercive field Ecare respectively 510 pC／N,61％,49 μC／cmand 21kV／cm. The research results show that the BGSPT64—0.01 ceramics is a good candidate material for the piezoelectric actuator and transducers.