The operating principle, design and test results of the de spreading and demodulation module for spread spectrum signals based on SAW technology have been introduced in this paper. The de spreading technique based on SAW matched filter has the advantages of high speed and wide bandwidth over the digital correlator; especially it has overwhelming superiority over its counterpart in the real time de spreading process. Meanwhile, the wide dynamic range and high sensitivity receive of signals can be realized since the limiting amplification technique has been used in the proposed module.