A manufacturing method of electronic module components according to the present invention includes: forming a plurality of module components on a principal surface of a substrate; forming a groove by dicing between the module components; spraying a conductive paste toward the principal surface of the substrate; and separating the module components. The spraying is performed so that an angle formed between a spray direction and the principal surface is an angle θ. The angle θ is set so as to satisfy the following expression (1), assuming that a depth of the groove is D and a width of the groove is w. The expression (1) is tan−1(D/2w)≦θ≦tan−1(2D/w)