The present invention discloses an alkali corrosion resistance high strength steel and a production method thereof, wherein the steel comprises, by mass, 0.15-0.20% of C, 0.45-0.75% of Si, 0.75-1.35% of Mn, less than or equal to 0.015% of P, less than or equal to 0.015% of S, 0.2-0.3% of Cu, 0.1-0.25% of Ni, 0.01-0.03% of Ti, 0.8-1.3% of Cr, 0.001-0.003% of B, 0.08-0.12% of V, 0.008-0.0120% of N, and the balance of Fe and unavoidable impurities. Compared with the existing ordinary building steel, the steel of the present invention has the following characteristic that the corrosion resistance in the alkaline environment is significantly improved, wherein laboratory test results show that the corrosion resistance is more than 2 times the corrosion resistance of the ordinary reinforcing steel bar. Compared with the epoxy resin coating reinforcing steel bar, the steel of the present invention has the excellent corrosion resistance, wherein the peeling phenomenon is easily generated on the epoxy resin coating reinforcing steel bar surface and the corrosion rate is high after the peeling. Compared with the stainless steel, the steel of the present invention has the substantially reduced production cost.