The invention discloses an environment-friendly steel for an ultrahigh strength automotive structural part and a production method of the environment-friendly steel. The environment-friendly steel isprepared from the following chemical components in percentage by weight: 0.11-0.50 percent of C, 0.15-0.65 percent of Si, 0.60-2.50 percent of Mn, smaller than or equal to 0.020 percent of P,
smallerthan or equal to 0.010 percent of S, 0.015-0.080 percent of Als, 0.15-0.80 percent of Cr, 0-0.80 percent of Mo, 0-0.80 percent of Ni, 0-0.10 percent of Ti, 0-0.10 percent of Nb, 0-0.10 percent of V, 0.001-0.005 percent of B, smaller than or equal to 0.008 percent of N and the balance of Fe and inevitable impurities. The method comprises the following steps of performing molten iron desulphurization, conventional electric furnace or converter
smelting,
continuous casting, descaling treatment,
casting billet soaking, rolling, cooling treatment, coiling, steel coil uncoiling treatment, blanking treatment, austenization, die
stamping forming and
quenching to obtain the steel for the ultrahigh strength automotive structural part. For the environment-friendly steel for the ultrahigh strength automotive structural part and the production method of the environment-friendly steel, the comprehensive
energy consumption of
ton steel is lowered by 71.5 percent, the environmental
impact index is lowered by 55.2 percent, the demand on the steel for the ultrahigh strength automotive structural part for automotive body lightweight design is met, and the steel can be expandedly applied to other ultrahigh strength steel fields at the same time.