Pulse laser with two-dimensional lattice distribution by optical transformation, was used to modify surface processing for ductile iron. The surface roughness of modified sample and original sample, modified layer depth, micro-hardness distribution and abrasion resistance were measured. On the condition of ensuring surface roughness (not melting or little melting) . the modified layer depth increased with pulse time. The wear resistance experiments showed that the wear resistance of ductile iron modified by pulse laser was increased by 1. 8 times.