The explosion is a sudden, rapid and accidental. The large dynamic loads generated by the explosion are much larger than the usual design loads for buildings, and this is one of the most important reasons for the catastrophe in the explosions. In recent years, terrorist attacks by explosives in different parts of the world Has led to serious and financial losses. (from the side of the column is a key element of a building that plays an important role in the reversal of buildings and structures because all the loads of buildings and yards to the column Therefore, the structure of the column, which can increase the resistance to explosive loading, increases the security of buildings and buildings. Analysis and studies on The steel core is made of columns and concrete sections. Composite columns are in line The explosion times are compared and investigated. At the beginning of the work, the construction of steel profiles and concrete cross section with steel cover in composite columns was made, in which two models of composite columns were created: explosion loads at three different distances From the middle of the column height (Cling mode , 0.5 and 2.5 meters), a composite column with different loads in terms of TNT was modeled in ABAQUS). The results showed that among the 2 models of composite columns, the columns with steel sheet protective against the explosive loading is about 80% more resistant than the reinforced RC columns, and after the explosion the column is still stable.