The present invention relates to a composite direct connector for a high voltage line. The composite direct connector for a high voltage line according to the present invention is characterized by comprising: a pair of terminal connecting rings electrically connected to each other; and ground terminals installed on the terminal connecting rings, respectively, and having a neutral line of a high voltage line on one side and a neutral line of a high voltage line on the other side connected to each other. According to the present invention as described thus far above, a neutral line for connecting a high voltage line and for external grounding is rendered unnecessary by a connecting member, thus making it easy to arrange ground wires within a structure, and affording easy construction without regard to access space.