A coil assembling apparatus comprising: a transport means for transporting in sequence a plurality of coil segments, each of said plurality of coil segments consisting of a pair of slot insertion portions (17b, 17c) extending substantially in parallel with each other and a linking portion for coupling said pair of slot insertion portions; a segment arrangement body capable of rotating around a center axis thereof and provided with a plurality of segment hold portions annularly arranged along a circumferential direction of said segment arrangement body, into which said plurality of coil segments transported by said transport means can be respectively inserted from outer radial directions of said segment arrangement body; and a guide means (112, 113) configured to guide to insert one slot insertion portion of said pair of slot insertion portions (17b, 17c) of each of said coil segments into one of said segment hold portions each time said segment arrangement body rotates by a first predetermined angle, and configured to guide to insert the other one slot insertion portion of said pair of slot insertion portions (17b, 17c) into another one of said segment hold portions when said segment arrangement body rotates by a second predetermined angle from the insertion of the one slot insertion portion, wherein said guide means (112, 113) is configured so that the one slot insertion portion of said pair of slot insertion portions passes between said guide means and said segment arrangement body, and so that the other one slot insertion portion of said pair of slot insertion portions passes over the opposite side of said guide means with respect to said segment arrangement body, characterised in that said transport means is configured to grip the other one slot insertion portion of said pair of slot insertion portions for transporting each of said plurality of coil segments so that the other one slot insertion portion of said pair of slot insertion portions is laid on said guide means in the state where the one slot insertion portion is inserted into one segment hold portion of said plurality of segment hold portions. a transport means for transporting in sequence a plurality of coil segments, each of said plurality of coil segments consisting of a pair of slot insertion portions (17b, 17c) extending substantially in parallel with each other and a linking portion for coupling said pair of slot insertion portions; a segment arrangement body capable of rotating around a center axis thereof and provided with a plurality of segment hold portions annularly arranged along a circumferential direction of said segment arrangement body, into which said plurality of coil segments transported by said transport means can be respectively inserted from outer radial directions of said segment arrangement body; and a guide means (112, 113) configured to guide to insert one slot insertion portion of said pair of slot insertion portions (17b, 17c) of each of said coil segments into one of said segment hold portions each time said segment arrangement body rotates by a first predetermined angle, and configured to guide to insert the other one slot insertion portion of said pair of slot insertion portions (17b, 17c) into another one of said segment hold portions when said segment arrangement body rotates by a second predetermined angle from the insertion of the one slot insertion portion, wherein said guide means (112, 113) is configured so that the one slot insertion portion of said pair of slot insertion portions passes between said guide means and said segment arrangement body, and so that the other one slot insertion portion of said pair of slot insertion portions passes over the opposite side of said guide means with respect to said segment arrangement body, characterised in that said transport means is configured to grip the other one slot insertion portion of said pair of slot insertion portions for transporting each of said plurality of coil segments so that the other one slot insertion portion of said pair of slot insertion portions is laid on said guide means in the state where the one slot insertion portion is inserted into one segment hold portion of said plurality of segment hold portions.