Aiming at the issue of high delay and reliability in the transmission of a large number of mechanical vibration wireless sensor networks, an efficient and reliable transmission method of mechanical vibration wireless sensor networks based on redundancy strategy is proposed. Firstly, the time consumption under ACK and Non-ACK transmission mechanism supported by IEEE 802. 15. 4 protocol is analyzed and compared, and the time delay caused by canceling transmitting ACK frame ensures the efficient transmission of a large number of mechanical vibration data; then, a reliable data transmission method based on redundancy strategy is proposed, which uses partial redundancy matrix for data coding to expand the original mechanical vibration data under packet loss rate; finally, the monitoring center decodes the received data to obtain the original data. The experimental results show that after the data size of the proposed method is increased by 25% after redundant coding, the transmission delay of each round can be reduced by about 3 s, the transmission energy consumption can be reduced by about 555 mJ, and the data integrity can be guaranteed.