To investigate the influence of different blast incision central angles and heights on a cooling tower's overall collapse effect, the structure's collapse process was simulated by ANSYS/LS-DYNA finite element software. The original model was modified to explore the effects of various blasting incision's central angles and heights. Five different blasting incision heights (14 m, 15 m, 16 m, 17 m, 18 m) and three blasting incision central angles (190°, 210°, 230°) were selected for orthogonal combination to analyze their impact on the collapse effect. The results indicate that the blasting incision's central angle significantly influences the distribution range of the collapse debris, while the blasting incision height plays a secondary role. The highest point of the pile is generally located along the collapse centerline and near the transverse fracture of the tower wall. The degree of fragmentation and location of fissures on the rear tower wall determine the height and location of the highest point of the debris pile. At a fixed blasting incision height, the vertical touchdown velocity of the structure decreases as the incision's central angle increases. Conversely, at a fixed incision central angle, the vertical touchdown velocity decreases and then increases with increasing incision height. The optimal demolition parameters for the cooling tower are a blasting incision angle of 210° and a blasting incision height of 17 m.