The present invention provides a manufacturing method of an intelligent electric quantity transmitter which solves the technical problems that a conventional electric quantity transmitter does not have a corresponding manufacturing method, needs to depend on the experiences to manufacture, is tedious to manufacture, etc. The manufacturing method of the intelligent electric quantity transmitter comprises the following steps of a, processing a sheet matal into a shell via a production system, wherein the shell has an outer coating, and the thickness of the coating is between 0.5 mm and 1.5 mm; b, assembling a palisade terminal block on the outer end face of an upper cover; c, assembling a fixing rack on the inner end face of the upper cover; d, separately assembling a circuit board 1 and a circuit board 2 on the fixing rack; e, putting a spongy cushion at the bottom of the shell, and putting an insulating paper at the side part of the shell; f, assembling the upper cover on the shell toobtain a finished intelligent electric quantity transmitter; g, detecting the intelligent electric quantity transmitter via a detection device; h, packaging and warehousing the detected and qualifiedintelligent electric quantity transmitter. The manufacturing method of the present invention has the advantage of being convenient to manufacture.