Abstract: Speech coding and image coding,as the core techniques of modern digital communication,are often independent of each other.A speech coding algorithm is put forward by using the DCT spectrum and wavelet transform image coding.Two dimensional DCT spectrum of the speech signal is analyzed,which is vital to the realization of the algorithm.This algorithm is demonstrated by simulation.Through processing a certain segment of speech,it shows that the synthetic speech is good when the zero proportion of wavelet decomposing parameter is 83.1941 percent and the saved energy after compression is 92.0867 percent.The algorithm realizes the integrative coding of speech and image with a moderate amount of computation,which is of significance to seeking after the realization of multimedia syn-cretic coding.