The invention provides a manufacturing method of an integrated inductor; the manufacturing method is simplified in technology and controllable in technological parameters, and can be used for obtaining high-quality products. The manufacturing method comprises the following steps: A. manufacturing an iron core ring-shaped object; B. putting the iron core ring-shaped object obtained in the step A into a polishing machine for grinding to obtain powder particles with particle sizes not exceeding 200 meshes; C. carrying out oxidization and insulation treatment to obtain oxidized and insulated powder; D. obtaining a mixture; E. putting a coil and a lead copper frame into a mould; pouring the mixture obtained in the step D into the mould for pressure casting to obtain an integrated structure; F. baking the integrated structure obtained in the step E, and then cooling to obtain a baked product; G. putting the baked product obtained in the step F into a passivation solution for passivating, and then carrying out aftertreatment on the passivated product to obtain the integrated inductor. The invention also discloses the integrated inductor manufactured by the method; the product is good in performances and less in damage to the manufacturing mould.