The utility model discloses a test device of rich water tunnel of high water head, including water pressure loading device and tunnel structure system device, tunnel structure system device includes overhead tank, tunnel model, waterproof board, non -woven fabrics, blind pipe, slip casting circle, country rock and drain pipe, the top of overhead tank is provided with the water inlet, the water inlet passes through tube coupling to water pressure loading device, tunnel model is placed to the inside of overhead tank, tunnel model's periphery is in proper order by waterproof board, non -woven fabrics, blind pipe, slip casting circle and country rock parcel, drain pipe intercommunication blind pipe and overhead tank are outside. The utility model discloses the operating condition that can simulate the rich water tunnel structure system of high water head can test under the different conditions condition that tunnel lining bore the water pressure, can the analysis various factors to lining cutting water pressure reduction coefficient's influence.