The influence of charge shape on the dynamic response of underground structures was investigated. A dynamic finite element analysis program was used to establish a model consisting of air, soil, reinforced concrete pipe corridors, and explosives. The response of the underground pipe corridor under explosion load in soil was studied using a fluid-structure coupling algorithm. In tests, TNT is often arranged as a square group charge to detonate underground structures, while in practice, precision-guided bombs are cylindrical in shape. Comparing the response of cylindrical charges and block charges with equivalent sizes and detonation positions, it was found that when the proportional distance is less than 0.5 m/kg^1/3, the axial overpressure of cylindrical charges at the same proportional distance exceeds the radial overpressure by approximately 1.12~4.79 times its peak value. Additionally, when the proportional distance is less than 0.4 m/kg^1/3, the axial overpressure of cylindrical charges surpasses their radial counterparts. The radial overpressure generated by cylindrical charges is greater than that produced by group charges at equivalent proportional distances. Furthermore, blast shock waves propagate faster along the axial direction compared to radial propagation. Under top initiation conditions for both types of charges, one notable difference lies in vertical responses at the top part of structures. The vertical disturbance duration of the roof of the structure is longer, and the peak vertical acceleration of the roof is 15.6% higher in the top part of the large cabin and 12.2% higher in the top part of the small cabin, which has no great influence on the acceleration and displacement of the side wall. These findings demonstrate that charge shape indeed influences dynamic responses within structures.