This master thesis is focused on elaboration of the literature on bark beetle and norway bark beetle and the data processing of 2017 provided by the State Forests of the Slovak Republic. The obtained information on the treated calamity, the bark beetle and the norway bark beetle were processed and evaluated.Monitoring was carried out on LS Nitrianske Pravno specifically on forest units Magura I and Nitrianske Pravno I. There were 1,968,906 individuals of bark beetle and 6412 individuals of norway bark beetle in 2017. This work includes proposal for safety measures against bark beetle and norway bark beetle.