In the theory of economics, if the quantity of a good or service supplied in the market is more than Controlling environmental degradation, which has an important place in the international literature, has been one of the main problems for economies. For this reason, the aim of this study is to examine the environmental relationship of public expenditures and terrorism, whose effects on environmental degradation are being discussed, between 2002-2017 in countries where terrorism is intense. Cross-section dependence and homogeneity and unit root tests were used in the study. Then the causality relationship was examined. Cross-section dependence, heterogeneity and unit root tests, which are among the panel data analysis methods, were applied in the study. The results show that terrorism and public spending are the cause of environmental degradation throughout the panel. When analyzed by country, causality relationship was determined among the variables.