Rapid creation of the Protected Territories Net in the Siauliai region began after the restoration of Lithuanian independence. Today protected territories in the region cover 114158 ha or 13,4% of the whole territory, to the country extend it makes 15,3%. The average in the European Union counties makes 18%. The area of the protected territories should be increased in the perspective as the strategic plans of activity of the State Service for Protected Areas suppose to expand these territories up to 16,7% before the year 2015. The creation process of the European Ecological Net NATURA began in the region in the year 2000; the Net consists of territories important for birds’ protection (TIBP) and territories important for residence protection (TIRP). The NATURA 2000 covers 7,1% of the region territory and 6% of the State territory, the average in the European Union counties makes 14%. The greater part of the Ecologic Net is established in the territories which are already protected, in the biosphere ground. TIBP have been confirmed by the European Commission and the territories meeting the selection criteria of the territories important for residence protection will be confirmed during the next 4 years. The creation of the NATURA 2000 will promote the preservation of the endangered population species. After the conduction of the research it appeared that there are 162 protected species in the Siauliai region, which are registered in the Lithuanian Red Data Book: 76 (47%) species are in the state of disappearance and are endangered rapidly. In order to guarantee the protection of the biological variety and development of the regular forest economy 743 places of forest devastation (PFD) were inventoried in the in the forests of the Siauliai region, the total place of which covers 2005 ha what makes 1,2% of the forest place and in the country it makes 1,3%. All in all 8907 PFD were inventoried in Lithuania, total space – 2649,9 ha. The majority of PFD was inventoried in the National forests – 94% and only some of them - 4% - in the private forests. The forests cover 135,2 thousand ha of the territory in the Siauliai region, amount of woodland – 29%, amount of woodland in Lithuania – 32,5%. Private forests in the region make 56% of all forests. The inventory of PFD in the National and private forests is not a complete process, therefore, in the future its number shall increase. The state of PFD in the National forests is good, but in the private forests it is comparatively bad. About 20% of the inventories places were destroyed in the private forests. In order to protect PFD in the future it is necessary to grand them the status of protected territories. The state of protected territories is worsening especially in the swamps and swamp laces of the forests. They are degrading because of the intensive agricultural and forest activities, development of infrastructure and tourism. The researches have shown that the part (16%) of the territories important for residence protection and (10%) territories important for birds’ protection are degrading in the Siauliai region because of the human activity and not keeping the supervision activities. Therefore, in order to save the main eco-systems, species and populations of the country for the future generations it is necessary to budget more money for the management of the protected territories (for the preparation of the plans of nature management), care, supervision and environmental control.