A foldable display module comprising a flexible display panel, a first module, and a second module; wherein the flexible display panel is disposed between the first module and the second module; wherein the first module comprises n first submodules, each of the first submodules comprises a first functional layer and a first adhesive layer, the first adhesive layer is disposed between the first functional layer and the flexible display panel, the first functional layer in an i-th first submodule comprises a first elastic modulus E 1i and a first thickness H 1i, the first adhesive layer in the i-th first submodule comprises a first storage modulus E 3i and a third thickness H 3i, n is an integer greater than or equal to 1, and i is an integer greater than or equal to 1 and less than or equal to n; wherein the second module comprises m second submodules, each of the second submodules comprises a second functional layer and a second adhesive layer, the second adhesive layer is disposed between the second functional layer and the flexible display panel, the second functional layer in a j-th second submodule comprises a second elastic modulus E 2j and a second thickness H 2j, the second adhesive layer in the j-th second submodule comprises a second storage modulus E 4j and a fourth thickness H 4j, m is an integer greater than or equal to 1, and j is an integer greater than or equal to 1 and less than or equal to m; and characterized in that the first elastic modulus E 1i, the first thickness H 1i, the first storage modulus E 3i, the third thickness H 3i, the second elastic modulus E 2j, the second thickness H 2j, the second storage modulus E 4j, and the fourth thickness H 4j satisfy the following formula: ∑ 1 n E 1 i × H 1 i 2 + ∑ 1 n E 3 i × H 3 i 2 = α ∑ 1 m E 2 j × H 2 j 2 + ∑ 1 m E 4 j × H 4 j 2, and α represents an allowable coefficient and is greater than or equal to 0.8 and less than or equal to 1.2; and in that a maximum allowable reference coefficient β max of an adhesive layer satisfies the following formula: β max ≥ π 4 × Ea × Ha 2 − Eb × Hb 2 Ec × Hc 2. Ec and Hc are respectively a storage modulus and a thickness of the adhesive layer, Ea and Ha are respectively an elastic modulus and a thickness of a first film layer, and Eb and Hb are respectively an elastic modulus and a thickness of a second film layer; the adhesive layer is disposed between the first film layer and the second film layer to adhere the first film layer and the second film layer; at least one of the first adhesive layer or the second adhesive layer is the adhesive layer; and the maximum allowable reference coefficient β max of the adhesive layer is proportional to a maximum allowable strain of the adhesive layer. a flexible display panel, a first module, and a second module; wherein the flexible display panel is disposed between the first module and the second module; wherein the first module comprises n first submodules, each of the first submodules comprises a first functional layer and a first adhesive layer, the first adhesive layer is disposed between the first functional layer and the flexible display panel, the first functional layer in an i-th first submodule comprises a first elastic modulus E 1i and a first thickness H 1i, the first adhesive layer in the i-th first submodule comprises a first storage modulus E 3i and a third thickness H 3i, n is an integer greater than or equal to 1, and i is an integer greater than or equal to 1 and less than or equal to n; wherein the second module comprises m second submodules, each of the second submodules comprises a second functional layer and a second adhesive layer, the second adhesive layer is disposed between the second functional layer and the flexible display panel, the second functional layer in a j-th second submodule comprises a second elastic modulus E 2j and a second thickness H 2j, the second adhesive layer in the j-th second submodule comprises a second storage modulus E 4j and a fourth thickness H 4j, m is an integer greater than or equal to 1, and j is an integer greater than or equal to 1 and less than or equal to m; and characterized in that the first elastic modulus E 1i, the first thickness H 1i, the first storage modulus E 3i, the third thickness H 3i, the second elastic modulus E 2j, the second thickness H 2j, the second storage modulus E 4j, and the fourth thickness H 4j satisfy the following formula: ∑ 1 n E 1 i × H 1 i 2 + ∑ 1 n E 3 i × H 3 i 2 = α ∑ 1 m E 2 j × H 2 j 2 + ∑ 1 m E 4 j × H 4 j 2, and α represents an allowable coefficient and is greater than or equal to 0.8 and less than or equal to 1.2; and in that a maximum allowable reference coefficient β max of an adhesive layer satisfies the following formula: β max ≥ π 4 × Ea × Ha 2 − Eb × Hb 2 Ec × Hc 2. Ec and Hc are respectively a storage modulus and a thickness of the adhesive layer, Ea and Ha are respectively an elastic modulus and a thickness of a first film layer, and Eb and Hb are respectively an elastic modulus and a thickness of a second film layer; the adhesive layer is disposed between the first film layer and the second film layer to adhere the first film layer and the second film layer; at least one of the first adhesive layer or the second adhesive layer is the adhesive layer; and the maximum allowable reference coefficient β max of the adhesive layer is proportional to a maximum allowable strain of the adhesive layer.