A supporting device of a flexible display panel, and display apparatus are provided. The supporting device includes a plate-like support component and a curvature adjusting component combined with the plate-like support component, wherein the plate-like support component includes two opposite outer peripheral portions, at least one portion of the curvature adjusting component is disposed between the two outer peripheral portions, and a structure of the curvature adjusting component is configured to enable the two outer peripheral portions of the plate-like support component to be bent toward the side of the plate surface provided with the plate-like support component, such that a curved support surface having a varying curvature can be obtained.