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Let $H$ be a Hilbert space and let $A: \mathscr{D}(A) \subset H \to H$ be a selfadjoint positive definite operator, $A^{-1} \in \mathscr{G}^q(H)\ (q>0),\ \beta_l \gt 0\ (l = \overline{0, m}), \ 0 = : b_0 \lt b_1 \lt \cdots \lt b_m$.
The estimate for the assymetry of a face of a man by its 3D model is proposed in the paper. It contains the detailed algorithm constructed for this estimate calculation. The used face modes are obtained by a methof of 3D scanning and are represented in the form of points cloud. The problem of detection of a face symmentry plane is solved. The algorithm was tested on 200 samples of face models. This testing shows the stability of the proposed estimate.