The invention discloses a double-sided wear-resistant steel plate and a manufacturing method thereof. The steel plate comprises components in percentage by weight as follows: the upper surface layer and the lower surface layer comprise 0.12-0.20 % of C, 0.2-0.50 % of Si, 1.5-2.0 % of Mn, <=0.005 % of S, <=0.02 % of P, 0.50-1.0 % of Cr, 0.10-0.50 % of Ni, 0.20-0.60 % of Mo, 0.01-0.02 % of Ti, 0.02-0.04 % of V, 0.001-0.002 % of B and 0.03-0.05 % of Als; and the middle soft layer comprises 0.10-0.20 % of C, 0.10-0.25 % of Si, 1.00-1.70 % of Mn, <=0.005 % of S, <=0.02 % of P, 0.02-0.05 % of Nb and 0.02-0.06 % of V. After steel billets are cleaned and stacked, the peripheries are sealed and welded in a vacuum condition, and heating is carried out after welding and sealing; discharged combined billets are descaled; the screw-down rates of rolling in the former three procedures are controlled; hot straightening and stacking for slow-cooling are achieved after rolling; then quenching treatment of the upper surface layer and the lower surface layer is carried out through a rolled quenching machine, and normalizing treatment of the middle soft layer is carried out; and straightening is carried out after heat treatment. The steel plate has the characteristics that both the upper surface and the lower surface are wear-resistant, and the ductility and the toughness of the middle layer are excellent; the service life is long; the yield is high; and the steel plate is suitable for mass production.