The evolution of the genesis of forest soils (gray and brown) in the forest-steppe area of the Republic of Moldova knows several hypotheses that can be reunited in three groups: 1) primary formation as a special type of soil, evolved under deciduous forests; 2) secondary formation following the degradation of chernozemic soils and the planting of woody vegetation on these surfaces; 3) their formation from virgin (natural) podzolic soils following the development of the process of substituting the woody vegetation with the grassy vegetation of steppe and meadow. According to recent research, gray and brown soils on the territory of the Republic of Moldova are polygenetic soils and were formed as a result of going through different phases of pedogenesis: virgin gray and browns soils, formed under deciduous forests → arable gray and brown soils, formed after deforestation and the use of arable land → gray and brown soils from the stage of evolution towards chernozems, under the secondary steppe vegetation, restored on the former agricultural lands, abandoned during the migration of peoples from east to west → arable leached (cambic) chernozems.