Abstract: The shaped charge effect is widely used in explosive welding, and it is very important for the bonding quality of titanium steel clad plate with thickness of 6 mm or more. Here are systematically studied the the working law of shaped charge and the quality of detonator area by experiments.Results show that the impact of shaped charge effect on the plate can be reduced by adding primary explosive. With the variation of height H, the depth of detonator area shows wave-like change. With the decreasing of height H, the taper of detonator area increases and the surface is smooth and natural. When the explosive welding charge of ϕ25 mm and the blast height H of 5~8 mm are applied, the detonator area of the titanium steel clad plate can be well controlled, the blast bonding quality is good, the shear strength can reach 224 MPa, and the tensile strength can reach 525 MPa.