The present invention discloses a current measuring coil, and a manufacturing method of the current measuring coil. The current measuring coil comprises a magnetic shielding frame, a framework coil and an insulated support block. The magnetic shielding frame is of a closed frame structure. The inner side of the magnetic shielding frame is provided with a groove. The insulated support block is embedded between the inner wall of the groove and the outer wall of the framework coil. The framework coil embedded in the insulated support block. The framework coil is formed through the series connection of a plurality of columnar windings. Each columnar winding comprises a framework, a center conductor and a conductive coil. The framework, made of non-ferromagnetic materials, is prepared through the injection molding process to be of a columnar structure. The center conductor is formed at the center of the framework through the injection molding process. The center conductor extends out of the two ends of the framework. The outer surface of the framework, between the two ends of the framework, is provided with a spiral groove. The conductive coil is plated inside the spiral groove. According to the technical scheme of the current measuring coil, and the manufacturing method of the current measuring coil, the consistency of the cross-sectional areas of windings can be ensured and the windings are uniformly distributed. The measurement accuracy is effective improved.