In order to study the forging process of new magnesium alloy Mg-8Al-1Zn-0.6Ca used in new energy vehicles and obtain optimized process parameters, new magnesium alloy Mg-8Al-1Zn-0.6Ca samples were forged in different forging temperatures, forging passes and reduction amounts. Then, the microstructures and mechanical properties of the alloy with various forging process parameters were analyzed. The results indicate that when the forging temperature changes from 250 ℃ to 450 ℃, the reduction amount increases from 30% to 50%, and the number of forging passes increases from 1 to 5, the average grain size decreases first and then increases, and the mechanical properties improves first and then decreases. Under the optimized forging process parameters with the forging temperature of 350 ℃, the forging pass of four, the reduction amount of 45%, and the reduction rate of 10 mm·s-1, the structure of sample is the smallest, the tensile strength and the yield strength both reach the maximum values, and the elongation after fracture is 17.5%.