The invention relates to a manufacturing material of a radioactive waste liquid disposal device. The manufacturing material comprises the following components, by mass percent, 27.0-31.0% of Cr, 3.0-5.0% of Mo, 1.0-3.0% of Mn, 4.0-6.0% of Fe, less than or equal to 0.02% of C, less than or equal to 0.01% of P, less than or equal to 0.01% of S, less than or equal to 0.5% of Si, less than or equal to 0.10% of Ti, less than or equal to 0.04% of Al, less than or equal to 0.01% of Co and the balance Ni. The manufacturing material has excellent corrosion resistance in a nuclear field waste liquid environment, the replacing frequency of container equipment can be reduced substantially, the safety, the stability and the economy of radioactive waste liquid treatment are improved, the safety of an evaporation concentration process is guaranteed, the production capacity and the efficiency are improved, and the safety guarantee can be improved substantially with the adoption of the manufacturing material.