A coil component is manufactured through the manufacturing method of the coil component. the manufacturing method comprises the following steps: placing the coil component in the step s401, wherein the coil assembly body, the mixed material of the magnetic powder and the resin are placed into a container, and the step s402 is executed in a pressurizing mode, wherein the pressure is applied to themixed material placed in the container, and the step s403 is performed under the pressure reduction step, wherein at least in the pressurizing process of the pressurizing step s402, so that the environment where the mixed material is located is changed into a negative pressure environment which is lower than the atmospheric pressure, applying a vibration step s404, wherein at least in the pressurereduction process of the step s403 at the pressure reduction step s403, the mixed material is vibrated, the mixed material is filled into the container, and the step s409 is hardened, wherein for a mixed material passing through the pressure reduction step s403 and applying a vibration step s404 and an integrated material mixing material of the coil assembly body, so that the resin contained in the mixed material is hardened. According to the invention, the filling omission of the mixed material can be reduced.