Information on emergency situations of natural and man-made nature is presented, a classification of catastrophes is given. The basics of people’s safety in emergency situations, ways of assessing the situation in case of accidents, measures to protect the population and territories, liquidation of the consequences of emergency situations . are considered. The main tasks and organizational structure of the All-Russian Catastrophe Medicine Service . Measures of emergency assistance in radiation and chemical damage, poisoning with toxic substances are considered. Described are particularly dangerous infections, mechanisms for the development of the epidemic process and measures to eliminate foci of biological damage. Characteristics of terrorist threats and dangers . Conforms to the latest generation of GEF SPS. For students of all specialties of the enlarged group "Health and Medical Sciences" .