"Active analog approach" has been employed to search the pharmacophoric conformation of the allylamine and benzylamine antimycotics. A local minimum energy conformation, which is very similar to the crystallographically determined coordinate of naftifine or terbinafine, has been applied to build all compounds. Comparative molecular field analysis (CoMFA) has been used to examine the correlations between the activities against 6 common human pathogenic fungi and the physicochemical properties of 62 allylamine and benzylamine compounds which had been aligned by rms fit rule. The predictive abilities of the resulting 3D-QSAR models have been tested by 8 new synthetic compounds and 5 reported compounds. Finally, we propose an interaction pattern between allylamine, benzylamine antimycotics and the active site of pseudoreceptor based on the results of 2D-QSAR and 3D-QSAR.