Electrical conductivity of carbon-nickel composite films annealed at temperatures 300,500 and 800℃ is studied over a temperature range of 50-300 K.While the conductivity data above room temperature show extended state conduction,lowering the temperature from 150 to 50 K leads to the Berthelot-type conduction mechanism.It can be seen that the films annealed at 500℃ have the maximum conductivity.The extent of the carrier wave function at 500℃ has the minima 2.87 × 10~(-7) cm and 2.45 × 10~(-7) cm in octahedral-metal stretching vibrations and intrinsic stretching vibrations of the metal at the tetrahedral site,respectively.The average distances between two vibration octahedral and tetrahedral sites at 500℃ also have the minima 1.13 × 10~(-7) cm and 0.97 × 10~(-7) cm,respectively.The Berthelot temperature for films annealed at 800℃ has the minimum of 94.3K. Electrical conductivity of carbon-nickel composite films annealed at temperatures 300,500 and 800 ° C is studied over a temperature range of 50-300 K.While the conductivity data above room temperature show extended state conduction, lowering the temperature from 150 to 50 K leads to the Berthelot-type conduction mechanism. It can be seen that the films annealed at 500 ° C have the maximum conductivity. The extent of the carrier wave functions at 500 ° C has the minima 2.87 × 10 -7 cm and 2.45 × 10 ~ ( -7) cm in octahedral-metal swing vibrations and intrinsic stretching vibrations of the metal at the tetrahedral site, respectively. The average distance between two vibration octahedral and tetrahedral sites at 500 ° C also have the minima 1.13 × 10 -7 cm and 0.97 × 10 ~ (-7) cm, respectively. The Berthelot temperature for films annealed at 800 ℃ has the minimum of 94.3K.