The development of 590MPa hot dip galvanizing dual phase steel plates for automobile in Benxi Steel group corporation was introduced. The chemical compositions and processes were designed based on phase transformation strengthening. The control of chemical compositions, rolling process parameters and continuous annealing process parameters, microstructures, mechanical properties were analyzed. The batch production practice show that the products have good mechanical property and shaping property. This product can be used to make high strength structural parts for automobile.