High-quality piezoelectric transducers require high electromechanical coupling coefficients and sensitivity.Based on the conventional 1-3-2 type piezoelectric composite material, an improved 1-3-2 type piezoelectric material is proposed to enhance the electromechanical coupling coefficient and receiving sensitivity of the piezoelectric transducer.The effects of different spacings on the resonance frequency, anti-resonance frequency, and electromechanical coupling coefficient of the sensitive elements of the improved 1-3-2 piezoelectric material are analyzed by finite-element simulation and compared with those of the traditional 1-3-2 piezoelectric composite material.The results show that the electromechanical coupling coefficient of the improved piezoelectric material is larger than that of the traditional 1-3-2 piezoelectric composite material with same spacing by approximately 0.03.Three improved piezoelectric materials with different spacings were fabricated.The results show that the improved piezoelectric material with a spacing of 1 mm has a large electromechanical coupling coefficient of about 0.68.