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Low-power wireless measurement network of dissolved oxygen concentration based on LEACH （Low energy adaptive clustering hierarchy）protocol and intelligent inverter control in aquaculture were introduced. In LEACH protocol, the measured data were fused by the cluster head and then sent to the base station. As the dissolved oxygen concentration changed slowly,，it was set that when changes in dissolved oxygen concentration were less than 0.1mg/L, node was no longer send data to the cluster head in each frame. Simultaneously head node adjusted the transmission slot of each node in the frame. Sleep time of cluster head and node was extended and power consumption was reduced. When dissolved oxygen concentration was not less than 5.0mg/L during the day, PLC controlled aerator automatically “farming water” at low speed through inverter. That fully took advantage of natural wind energy, solar energy and algae photosynthesis to improve water quality. When the dissolved oxygen concentration was less than 5.0mg/L, fuzzy variable frequency control was used to reduce errors rapidly. When approaching the control target value, the inverter outputted stability to ensure the stable operation of the aerator motor. Statistics show that this control method saved more than 42.3% of the electricity, increased the production by 11.8% and increased the comprehensive economic gains by 41.3%.