Superconducting nanodrop model is constructed on the basis of the assumption of equality of the free energy functional gradient term to zero due to the order parameter value constancy in the superconducting nanodrop volume. In the investigation, we have defined the superconducting nanodrop thermodynamical characteristics: partition function, the magnitudes of the jumps in entropy and specific heat at the second order phase transition, total energy, energy fluctuation, specific heat, free energy, and entropy. ; Comment: 10 pages, 0 figures. Submitted to the Izvestiya VUZov. Fizika (Russian Physics Journal)