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Traditional underwater communication abnormal sound pressure monitoring network is unable to independently completed node resources and recycling, store the monitoring blind area and the ability for dynamic network, cannot be accurately for abnormal sound pressure monitoring such as larger defects. Therefore, designs and realizes a new kind of underwater abnormal sound pressure monitoring system, communication protocol based on the depth of information between nodes in the system, the complete data forwarding, gives the system monitor, CC2430 processor, terminal node, and the coordinator node hardware design principle, system data software flow is given. Link layer system realized with improved AODV routing protocol, and enhance the system monitoring performance of abnormal pressure. Test results indicate that the acoustic pressure monitoring constellation diagram of the system is obviously better than the traditional system, under the interference of different types, the emission signal using PSK modulation, carrier center frequency is 10 kHz, sampling rate is 50 kHz, bit rate is 2000 bit/s. Experimental results show that this system has a low error rate, abnormal sound pressure signal monitoring for abnormal sound pressure channel transmission characteristics can be better calibration and compensation, has strong stability.