In the paper, the results of investigations of temperature and frequency dependences of dielectric permeability and dielectric loss of compositions LDPE + xvol%Bi₂Te₃ are stated. The investigations were carried out at frequency 10 – 10⁵ Hz and temperature 20°C - 150°C intervals, respectively. It was revealed that increase of percentage of the filler Bi₂Te₃ in the matrix, reduces to increase of dielectric permeability and dielectric loss of composites LDPE + xvol%Bi₂Te₃ in connection with the change reducing to Maxwell-Wagner’s volume polarization and emergence of comparative strong inner field in semiconductor clusters.