In order to obtain the characteristics of electromagnetic radiation signals during the explosion of RDX and RDX-based aluminized explosives, the broadband antenna measurement system is utilized in explosion experiments. The experimental results show that the electromagnetic radiation signal of the RDX and RDX-based aluminized explosives has a significant delay compared with the detonation time. At 2 m distance, the field strength of the explosive electromagnetic radiation signal is 1.8-15.2 V·m^-1 and decreases with the increase in the explosive distance. When the aluminum content is from 0% to 20%, the field strength of the electromagnetic radiation signal generated by the explosion increases with the increase of aluminum content. When the aluminum content is from 20% to 30%, the field strength of the electromagnetic radiation signal generated by the explosion decreases as the aluminum content increases. The frequency of electromagnetic radiation signals generated by the explosion of RDX and RDX based aluminized explosives is mainly distributed within 500 MHz. The addition of aluminum changes the frequency component of the electromagnetic radiation signal, and the spectrum of the electromagnetic radiation signal of different aluminized explosives is different.