With the development of mobile communication, data transmission over wireless channels is getting more popular recently. We face two problems in wireless communication, limited bandwidth and high error rates. When using progressive coding, the decoder can decide where to stop receiving data to save bandwidth. In this thesis, we focus on the progressive mode in JPEG image compression standard over relatively high error rate channels. We utilize synchronization technique in JPEG standard to isolate erroroneous blocks, and then use the corresponding error concealment technique based on its error position occurring in spectral selection or successive approximation progressive mode. The technique we developed improves subjective quality of reconstruction image.