Provided are a flexible display screen cover board, a flexible display module and a flexible display device. The flexible display screen cover board comprises a composite superposed structure, the composite superposed structure comprising at least one flexible glass layer (1) and at least one organic layer (2) being provided in a superposed manner. The flexible glass layer (1) and the organic layer (2) are designed in a composite superposed manner, and the rigidity property of a glass material and the flexibility property of an organic material are used, so that it is ensured that the flexible display screen cover board can have a bendable property and enough hardness at the same time, and the bendable property of the flexible display screen cover board can be improved.
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