A solar spot spectrum in the regions of the Li I 670.8 nm line as well as of some Ca I, Ti I, Al I, and Na I lines was observed. The observations were performed on 21 August 1981 with the TST-2 telescope of the Crimean Astrophysical Observatory. A spot model was calculated using the observed profiles of Ca I, Ti I, Al I, and Na I lines. On the basis of this model and the observed Li I 670.8 nm line profile the lithium abundance was estimated as lg(N_Li) = 0.78 (in the scale lgA(H) = 12).