Abstract: Analysis technology of blasting vibration signal is an important link in blasting hazard control. Combined with monitoring signal, we use HHT analysis method to carry on the analysis. First, the signal is decomposed into different IMF component through using EMD empirical mode, and we transform the main component by Hilbert and extract the envelope signal. This method was verified in the identification of differential blasting delay interval. According to the IMF component after the Hilbert transform of the Hilbert spectrum energy, we research the impact of vibration signals of different frequency from the time-frequency-energy. HHT analysis method was verified with efficiency and good adaptability in the nonlinear and unsteady signal of blasting.