A flexible display panel is provided, including a flexible base, a barrier layer, a buffer layer, an active layer and a gate insulating layer, a gate metal layer and a second insulating layer, a second metal layer and an interlayer insulating layer, a second interlayer insulating layer, and a source/drain metal layer; on the second interlayer insulating layer, a first via hole is formed to communicate with the source/drain metal layer and the active layer, and a second contact hole is formed to communicate with the source/drain metal layer and the second interlayer insulating layer. A manufacturing method of a flexible display panel and a display apparatus including the display panel are also provided. The disclosure can ensure the normal display of the flexible display panel during the bending process.