Aiming at the problems of difficulty in obtaining vibration signals and failure of measured signals in the harsh environment of high temperature, high pressure, high overload, etc. of missile tail during launch, we design a three-axis based on ADXL345 using dynamic storage test technology and three-axis digital accelerometer in this paper. Specifically, by selecting a suitable empennage vibration test acceleration sensor and constructing a multi-buffer outer structure with strong shock resistance, the real acquisition of the vibration signal of the missile empennage was successfully realized. And the effective acceleration curve and the vibration spectrogram were obtained by analyzing and collecting the vibration data of the empennage, which provide an important basis for the improvement of the tail structure, and are of great significance to collect the tail vibration signal in the future.