A manufacturing method of a flexible OLED panel, a flexible OLED panel, and a display is disclosed. The flexible OLED panel is manufactured by the manufacturing method, and the display includes the flexible OLED panel. The disclosure functions as a role of blocking crack diffusion by forming the opening holes in the inorganic layer to release the cracking stress; the opening holes are arranged in at least two rows, and two of the rows of the opening holes adjacent to each other are arranged in a dislocation manner in the surrounding direction so as to distribute at least one of the opening holes on a line connecting any position on the boundary of the second area away from the first area to any position of the display area, the diffusion of cracks at any position in the inorganic layer can be blocked by at least one of the opening holes.