The invention belongs to the field of surface coating of steel materials and particularly relates to a spangle control method of hot dip galvanizing large spangle products in different strip steel thicknesses. In the method, through reasonable regulation on process parameters comprising raw material surface roughness, temperature of feeding strip steel into a zinc pot, content of antimony and aluminum in molten zinc, temperature of the molten zinc, span temperature, machine set speed and the like, control on the spangles in hot dip galvanizing large spangle products in different strip steel thicknesses is achieved, so that the large spangle products are beautiful in appearance and have clear profiles and strong stereo-sense and the spangles have proper sizes and are uniform. The method solves the problem of non-uniform size of the spangles in the hot dip galvanizing large spangle products in different strip steel thicknesses without any extra investment. The method is simple, is low in cost and can be widely promoted and applied in a hot dip galvanizing machine set.