The invention discloses a high-strength bolt and relates to the field of a machining process of high-strength connection parts. The high-strength bolt is characterized in that production raw materials comprise 0.38-0.45% of C, 0.15-0.35% of Si, 0.80-1.20% of Mn, 0.025% or less of P, 0.025% or less of S, 0.80-1.20% of Cr, 0.15-0.25% of Mo, 0.25% or less of Cu, 0.30% or less of Ni, and the balance Fe and inevitable impurities. The strength grade of the high-strength bolt formed through the components and the method can reach 14.9, the high-strength bolt is high in tensile strength, not prone to cracking, resistant to fatigue and severe environment and high in combination property.