The measures for enlargement of the current fauna from the natural reservations and its adjacent areas by introducing the new species of the hunting animals have been undertaken in Moldova during the last several years. These intruduced hunting animals species are gradually adapt themselves to the new living conditions and as a result, easily resist the consequances of some economical activities udertook by humans in the area, and successfully undergo through grow and reproduction processes. The study on parasitic fauna in wild mammals from the Republican Reproductive Center of the “Mandreşti” forestry, Teleneşti region (Republic of Moldova) has revealed the high level of their infestation with fascioles, dicrocelium, strongiles and protista. The red deer (Cervus elaphus Linaeus,1758) have been infested with Dicrocoelium lanceolatum (16,6%), Fasciola hepatica (14,8%), strongiles larvae (74,0%) and ovocysts of Eimeria spp. (45,2%); the Japanese deer (Cervus nippon Temminsk 1838) has been infested with D. lanceolatum (18,4%), F. hepatica (19,4%), strongiles larvae (87,7%) and ovocysts of Eimeria spp. (35,6%); roedeer (Capreolus capreolus Linaeus, 1758) - with D. lanceolatum (32,6%), F. hepatica (7,5%), strongiles larvae (94,5%) and ovocysts of Eimeria spp. (65,8%). The wild boar revealed 5,9% level of infestation with Dicrocoelium lanceolatum, larvae of Strongyloides ransomi in 86,2% of cases, Metastrongylus elongatus - 64,7%, and Eimeria spp. (65,3%). The high level of parasitic infestation of the wild animals again demonstrates that they play an important role in maintaining the epizootic chain of these diseases and also have crucial role in infesting humans and domestic animals. Therefore it is of paramount importance that parasitic diseases in wild animals are monitored on annual basis that allows to determin their evolution, emergence of new parasitic agents and elaborating new combating measures for such.Thre is a need to apply the specific measures for the control and prophilactics of the parasitic diseases in these animals which assure, if not total treatment than at least diminuishing the level of the invasion to the one that has subliminal effect. Accordingly, these measures could be developed only knowlingly the biologic paculiarities of the parasites and their hosts but also of the environment, crutial as to assure the interruption of the foodchain of the parasitic agents. The work was performed within the project 15.817.02.12F.