Aim\ To study the relation between output steel dent and explosion pressure of compound explosive HMX/F\-\{2641\}. Methods\ On the basis of measuring steel dent of HMX/F\-\{2641\} from small scale gap test
the method of explosion velocity and relevant theory are used to interpret the relation between steel dent and explosion pressure. Results\ The relational expression between the steel dent and explosion pressure of HMX/F\-\{2641\} and the scope of application are presented. Conclusion\ On the basis of measuring steel dent of HMX/F\-\{2641\}
the relational expression between the steel dent and explosion pressure can be used to represent the energy output of HMX/F\-\{2641\} quantitatively.