To provide a ridge structure of a shed roof capable of using a ridge cover used usually on ordinary both flow roofs as it is.

In this ridge structure of the shed roof, a ridge cover supporting sash 2 is mounted on a roof substrate 1 in a ridge side end part of the shed roof, a throating member 3 is attached to the ridge cover supporting sash 2, and a section from a side face on a ridge side of the ridge cover supporting sash 2 to an end face on a ridge side of the shed roof is covered with the throating member 3. The ridge cover 4 having an opened lower face and a symmetrical cross section shape is put on the ridge cover supporting sash 2 from above the throating member 3 to cover it and is mounted on it.