根据声光双稳系统混沌驱动下的动力学行为，提出利用系统的相位特性实现信息的混沌加密，并且由接收端混沌驱动产生的混沌信号完成信息提取的原理。发现在较大的噪声覆盖下仍然可以实现信息的安全传送，由于信息解密不需要与载波完全同步的混沌信号而只利用传输信号与接收端被驱动系统输出信号的相位关系，因此这种方法具有实际应用价值。 According to the dynamic behavior under the chaotic driving of the acousto-optic bistable system, the chaotic encryption of information using the phase characteristics of the system is proposed, and the principle of information extraction is achieved by the chaotic signal generated by the chaos-driven receiver. It is found that the information can still be safely transmitted under the large noise coverage. Since the information decryption does not require a chaotic signal completely synchronized with the carrier, but only uses the phase relationship between the transmitted signal and the output signal of the driven system at the receiving end, this method has Practical value.