This paper introduces adaptive lifting wavelet transform algorithm firstly.Prediction and update operator have been adjusted adaptively according to information partial characteristic and accurate match to the process information.The algorithm can decrease the amount of calculation and computational complexity in the image wavelet analysis

can carry out the same address operation

and is advantageous to recur to the DSP hardware realization.Secondly

this paper proposes to adopt adaptive depth first search strategy through definition floating threshold

and improved image coding efficiency.The experiment results show that the new image compression scheme has been improved and it is better than traditional algorithm in the aspects of image quality

reduced the image bit number

compression effect and compression coding efficiency.