The invention discloses a production method of a low-compression-ratio super-strength steel Q960E super-thick plate. The steel comprises, by mass percent, 0.15 to 0.20 of C, 0.15 to 0.35 of Si, 1.0 to1.50 of Mn, not larger than 0.012 of P, not larger than 0.003 of S, 0.020 to 0.035 of Nb, 0.030 to 0.060 of V, 0.010 to 0.025 of Ti, 0.020 to 0.045 of Als, 0.50 to 0.80 of Cr, 0.40 to 0.60 of Mo, 1.00 to 1.40 of Ni, 0.0008 to 0.0025 of B, not larger than 0.68 of CEV and the balance Fe and other trace elements. The process comprises the steps of molten iron pretreatment, converter smelting, LF external refining, VD vacuum treatment, continuous casting, heating, rolling, straightening, quenching, tempering, finishing, property detection and flaw detection. Limiting of the super-strength steel compression ratio of the tradition plate blank production is broken through, the large-thickness super-strength steel is produced with the rolling compression ratio of 2.2 to 3.0, the property difference of the steel plate in the thickness direction is small, and according to the mechanical properties, the yield strength is smaller than or equal to 30 MPa, the tensile strength is smaller than or equal to 25 MPa, the ductility is smaller than or equal to 2%, the -40 DEG C longitudinal impact power is smaller than or equal to 20 J, and the transverse impact power is smaller than or equal to 15 J.