The invention provides a soil humidity lamination measurement system, putting soil in the housing 1 in delamination, a baffle 7 and a bottom board 9 are installed in parallel in the housing 1 of the soil humidity lamination measurement system, a number of baffle water holes 7a are opened on the baffle 7, a fragmental stone layer, a primary soil layer and a soil layer are respectively placed upwards above the baffle 7, a pair of electrodes 2 are symmetrically installed in every layer of the fragmental stone layer, the primary soil layer and the soil layer, which are divided into 2-4 layers, along the depth direction of the housing 1, the humidity measurement device includes a D. C. voltage stabilizing power source 15, a milliammeter 13, a microampere 13, and a resistor serializer 12, the first conducting wire 16 and the second conducting wire 16' are respectively connected with outer ends of the pair of electrodes 2, which protrudes from the housing 1 symmetrically, the first conducting wire 16 is connected with the output terminal of the D. C. voltage stabilizing power source, the second conducting wire 16' is connected with the switch of the resistor serializer, the D. C. voltage stabilizing power source 15 is connected with the milliammeter 13 or themicroampere 14 by a switch, the milliammeter 13 and the microampere 14 are connected with the resistor serializer (12).