In order to selection suitable soil moisture monitoring equipment in huang-huai-hai plain in China. The field experiments were conducted during 2012, the soil moistrue content were observated with intelligent neutron probe, Diviner2000, Trime, swr-2, at same time observed soil moisture with drying method. At last analysis measurement results of intelligent neutron probe, Diviner2000, Trime and swr-2 based on the measurement results with drying method. The result shows that the highest accuracy is intelligent neutron probe.