BT/HA nanocomposites can be obtained by changing solvents in a hydrothermal process at 160 °C for 12 h. The ethanol solvent is advantageous to the synthesis of rod-like BT/HA nanocomposites. The characteristic bands of FTIR spectra representing BT/HA nanocomposites were synthesized. The BT/HA nanocomposites show superior electric properties.