The invention discloses a manufacturing method for metal soft magnetic powder insulating particles. The manufacturing method comprises the following steps of adding magnesium dichromate in glycerol, performing stirring until a solution becomes viscous liquid with a uniform color, adding phosphoric acid for mixing, and adding urea and sodium dodecyl benzene sulfonate for mixing to prepare an insulating agent; (2) diluting the insulating agent with acetone, and adding metal soft magnetic powder in the insulating agent, performing stirring until a dry state, dispersing the powder with a sieve, drying the dispersed powder in a shallow, and performing baking to obtain primary processing powder; (3) diluting epoxy resin with the acetone, adding the diluted epoxy resin in the primary processing powder, performing screening, granulating, shadow drying and baking after stirring to obtain secondary processing powder; and (4) adding the secondary processing powder in a lubricant, and performing uniform mixing to obtain the metal soft magnetic powder insulating particles. A power inductor provided by the invention has high-saturation, large-current and low-eddy current loss power inductance performance; and compared with a traditional inductor, by adopting the method, the stability and the characteristics of a product are improved on the aspects of materials and processes.