The invention discloses a hardened and tempered steel plate production method. Chemical components of steel include, by mass, 0.08% to 0.24% of C, 0.20% to 0.50% of Si, 0.80% to 1.30% of Mn, smaller than or equal to 0.018% of P, smaller than or equal to 0.005% of S, smaller than or equal to 0.020% or smaller than or equal to 0.050% of Als, smaller than or equal to 0.25% of Cr, smaller than or equal to 0.08% of Mo, smaller than or equal to 0.25% of Cu, smaller than or equal to 0.25% of Ni, and the balance Fe and remaining elements. The method includes the following processing steps of converter smelting, refining, vacuum refining, casting, heating, rolling, slow cooling and thermal treatment. Through continuous casting blank production, the internal quality of blanks is guaranteed, the low-cost chemical components only with Nb, V and Ti alloy added are selected and used for design, the cleanliness of steel is guaranteed through an LF and VD process, and the sum of the levels of various impurities does not exceed 2.0; through rolling control and normalizing treatment, the grain size of the steel reaches more than 8.0; through the effective implementation of the technical measures, steel plates for a carbon-manganese-silicon pressure container and steel plates guaranteeing flaw detection, the mechanical performance and the plate shape for the carbon-manganese-silicon pressure container are successfully produced.