Cold-rolled high-weather-resistant steel plate with high strength and plasticity and preparation method thereof

The invention provides a cold-rolled high-weather-resistance steel plate with high strength and plasticity and a preparation method thereof. The cold-rolled high-weather-resistance steel plate with high strength and plasticity comprises the following chemical components, by weight, 0.01-0.05% of C, less than or equal to 0.25% of Si, 0.15-0.45% of Mn, less than or equal to 0.015% of P, less than or equal to 0.01% of S, 0.2-0.35% of Cu, 0.20-0.35% of Ni, 4.0-6.0% of Cr, 0.035-0.055% of Als, 0.010-0.025% of Ti, less than or equal to 0.0080% of N, 0.005-0.015% of Re and the balance Fe and inevitable impurities. The cold-rolled weather-resistance steel has high strength and plasticity, the yield ratio can be stabilized to be smaller than or equal to 0.75, the product of strength and elongation can be stabilized to be larger than 17500 MPa, and the corrosion resistance is smaller than or equal to 30%. The stamping structure requirement and the rolling forming requirement can be met. 本发明提供了一种具有高强塑性冷轧高耐候钢板及其制备方法，述具有高