The invention provides a production method of a hot-rolling austenitic stainless steel strip steel, comprising the following steps of: (1) removing phosphorus through a high-pressure water phosphorus removal device before a steel billet starts to be rolled, wherein water pressure is more than or equal to 25 MPa, and water flux density is more than or equal to 0.0021/cm<2>; (2) enabling the steel billet to enter a rolling mill to start to be rolled, wherein the finish-rolling temperature of a strip steel ranges from 902 DEG C to 1030 DEG C, and the total screw-down rate of the strip steel is higher than or equal to 60 percent; (3) cooling in air for 3-10 seconds after the strip steel is taken out of a last rolling mill; (4) starting quenching after the strip steel is cooled in the air, and carrying out ultra-fast cooling on the strip steel at the cooling velocity more than or equal to 400 DEG C/s to inhibit the precipitation of carbides; and (5) starting reeling when the strip steel is cooled to the temperature specified by a process. In the invention, when the hot-rolling austenitic stainless steel strip steel is produced, acid consumption quantity can be reduced, and the strip steel can be directly subjected to mechanical phosphorus removal and pickling, thereby reducing the production cost; meanwhile, the emission of nitrides is decreased, and environmental pollution is reduced.