Based on the patent technology of “hollow laser beam and internal powder feeding”, the accumulation experiments of the reducing solid of revolution are carried out on the substrate of 45# steel with a novel device of coaxial inside-beam powder feeding. In the experiment, we respectively control the axially symmetrical rake, Z axis incremental and power, and analyze their respective influence. The conclusions are as follows: In the inclined wall depositing process, the skew angle is in direct ratio to offset and scanning rate and is inversely proportional to powder delivery rate and powder utilization ratio. The limit skew angle is in direct ratio to the offset and is inversely proportional to the height of the cladding layer. With the cladding layers increasing, the utilization rate of the powder is reduced and the defocus distance becomes bigger. In the process of high-rise cladding accumulation, molten pool changes from 3D cooling into 2D heat dissipation and formed pool temperature arises, and so the power rate should be reduced correspondingly. The quality of molding parts that this experiment gets finally is higher with smooth appearance and lower roughness. It can provide reference to the test of the variable cross-section 3D accumulation.