<p>When an iron-based amorphous coating was deposited on the surface of H13 steel using laser cladding, the bonding performance between the coating and the substrate, as well as the coating thickness, were ensured by adjusting the laser energy density and powder feed rate. Aiming at dilution rate of 10% ~ 15% and no macroscopic defects (cracks, pores, etc.), the effects of laser energy density and powder feeding rate on the microstructure distribution and hardness of the coating were analyzed. By analyzing the microstructure and hardness distribution of several groups of ideal macro-morphology coatings, the best technological parameters to ensure the morphology and properties of the coatings were obtained. The results show that the ideal dilution rate of the coating is distributed around the fitting line composed of laser energy density and powder delivery amount. When the amount of powder is constant, the smaller the laser energy density, the finer the microstructure of the coating and the higher the amorphous rate. The hardness of the coating is not only affected by the amorphous rate, but also by the grain size. When the laser processing parameters are as follows: laser power 2000&#xa0;W, scanning speed 3&#xa0;mm/s, powder feeding rate 6&#xa0;g/min, the dilution rate of the prepared coating is 13.4%, with the highest microhardness value of 834.1HV. Finally, the mechanism of high hardness of the coating was revealed by analyzing the phase and element distribution of the coating corresponding to the optimal process parameters.</p>