Abstract: The connection apparatus for connecting prefabricated type panels includes a casing fixedly installed in an edge portion of a prefabricated panel in such a manner that a first installation portion is formed in the center of the same in a longitudinal direction, and a second installation portion is formed in a side surface and is formed alternately with respect to the first installation portion; an engaging member in which a helical gear portion is formed in the center portion of the same, a upside down L-shaped guide groove is formed in the helical gear portion, and an engaging expansion portion having an upper slanted surface is formed in a front end of the same, so that said engaging member is installed in the first installation portion of the casing in a rotatable and movable manner in such a manner that two neighboring prefabricated type panels, a prefabricated type panel and upper horizontal member, and a prefabricated type panel and lower horizontal member are closely contacted each other; an operation