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Congestion of wireless sensor network will increase transmission delay, even cause serious data loss. Not only it has impact on data transmission and the quality of service, but also wastes energy and shortens the network lifetime. To address this challenge, a novel congestion control strategy is proposed for wireless sensor networks called CCBT (Congestion Control Based on Triangle module operator) that comprises three mechanisms: (i) congestion detection based on triangle module fusion operator, (ii) hop-by-hop congestion notification, (iii) distributed rate adjustment. The simulation results show that CCBT significantly improves the performance of data transmission such as queue delay and the number of packet retransmission. Also, CCBT achieves steady increasing throughput.