Coaxial powder feeding laser cladding is a surface strengthening method used to prepare a metallurgical bonding coating on the material surface to improve its performance. To better coupling the powder flow with the flat-top laser, effectively improve the powder utilization rate, and ensure the uniformity of power, this research used simulate software, high-speed camera and image processing software to establish the relationship between the laser cladding processing parameters and the power flow upon the laser focus pot. A better powder feeding parameters were designed by using fluid analysis software and combined with experiments, which improves the powder utilization rate and improves the quality of cladding forming. By using three-dimensional modeling and software analysis, the influence of process parameters on the coupling effect of coaxial powder feeding were investigated. When the powder disk speed is 1.2 r/min and the carrier gas flow rate is 4 L/min, the coupling of powder flow and laser beam has better performance, the powder flow utilization rate is high, and the convergence characteristics are good, The cladding layer has a good morphology.