We compare the time-frequency spectrums of analog signal which was determined by continuous wavelet transform (CWT), S-transform, Wigner-Ville distribution (WVD) and Hilbert-Huang transform (HHT) . The results show that HHT based on empirical mode decomposition (EMD) has higher adaptability and can ac- curately extract the time-frequency characteristics of the explosion signal. Then we analyze time-frequency spec- trum of broadband explosion vibration signal in actual by HHT, and time-frequency analysis results accurately described the time varying characteristics of the explosion vibration signal.