With the IPG YLS4000 optical fiber laser, N-doped Fe-based amorphous composite coatings are prepared on a high strength steel substrate by three laser processes. The three coatings show amorphous structure with crystalline phase on them. The hardness, wear resistance and corrosion resistance of the coatings are evaluated, indicating that the coatings have higher hardness, better wear resistance and corrosion resistance than substrate. The coating 2 fabricated under laser power of 1.5 kW and laser beam scanning speed of 180 mm/min has the highest amorphous phase content among the three coatings, and it also exhibits the best performance compared with the other two coatings. The results show that proper laser process parameters are important and coatings with higher amorphous phase content have better properties.