The method for the phase extraction of a continual deformation object based on the temporal wavelet transform is proposed. By introducing the temporal wavelet transform method to analyze the time-sequence fringe patterns, the modulated phase distribution relative to the fundamental frequency is obtained. The gray value along time is evaluated point by point by using the continuous wavelet transform. Due to the frequency localization property of the continuous wavelet, the instantaneous velocity and high-quality three-dimensional surface-profile at different instants of a continuoual deformation object is obtained. A cantilever beam with a continual deformation is detected. The experimental result well demonstrates the validity of this method and retrieves the process of the continual vibrating of the beam. The temporal wavelet transform method provides a new method to analyze the kinetic characteristic of a continual deformation object.