Abstract: The damage effect of high-strength concrete target plate under the action of explosion load is very complicated. The corresponding experiment is designed for the damage problem of high-strength concrete target plate under the action of explosion load, and the experimental results are verified and analyzed by using the virtual fluid Euler-Lagrange bidirectional fluid-structure coupling algorithm (GEL) constructed by the author. The effects of different charge modes, charge amount, strength of concrete target plate and explosion height on the damage results are discussed in detail. The difference of action mechanism between external and implosive loads is summarized, and the damage mechanism of high-strength concrete under the action of explosion loads is revealed. The results showed that for the external explosion condition, the depth of the explosion pit under three different strengths of 600g charge increased by 11.85%, 8.82%, and 7.71% compared to 300g