The invention discloses a corrosion-resistant air cooler. The corrosion-resistant air cooler is characterized in that the corrosion-resistant air cooler comprises an air cooler shell, a draught fan, arefrigerant circulation system and a control module. The draught fan and the refrigerant circulation system are arranged in the air cooler shell. The control module is used for controlling the draught fan and the refrigerant circulation system. The air cooler shell comprises, by mass percentage, 8-10% of Al, 1-3% of Mn, 0.18-0.3% of C, 0.05-0.1% of Cr, 0.01-0.05% of Nb, 0.01-0.03% of Cu, 2-5% ofSr, 0.0002-0.005% of Nb, 0.005-0.008% of N, 0.0002-0.005% of S, 0.5-0.8% of Zn, 1.5-1.8% of Si, 3-5% of Ca, 0.5-0.8% of Ti, 0.3-0.5% of Ni, 0.002-0.004% of B, 0.1-0.4% of V, 0.5-0.8% of a rare earth element and the balance Fe. The invention further designs a reinforcing process of the corrosion-resistant air cooler. The air cooler is simple and compact in structure and good in corrosion resistingeffect; the service life of the air cooler is prolonged; and the cost is lowered.