In 462 left testes of males, died in the age of 17-91 years (x = 51,9 +/- 16,8 years) the occurrence frequency and the degree of teratospermatogenesis activity was assessed. In the whole material, the phenomenon occurred in 84% of cases. In 47,83% of cases the grade of intensity was low (+), in 22% high ( ), in 14% moderate (++). Alcoholic intoxication occurred to have the heaviest impact on teratospermatogenesis frequency (92,5%); in liver cirrhosis the occurrence frequency was significantly more rare (76%). The age of cadavers and the weight of the gonad did not correlate with teratospermatogenesis occurrence frequency. Postmortem autolysis was not connected with the phenomenon occurrence also. It correlated positively albeit with type II and III seminiferous tubules, i.e. with tubules, where spermatogenesis was stopped on the stage of spermatids and spermatocytes, and negatively with hyalinized tubules, and also with the V% value of tubular membranes.