A mapping curve parameter obtaining method, comprising: obtaining a first mapping curve parameter set and first maximum target system display luminance, wherein the first mapping curve parameter set corresponds to the first maximum target system display luminance, and the first mapping curve parameter set comprises one or more parameters related to a mapping curve, including at least one of a scaling factor, an offset factor, and a bending shape factor; obtaining a display luminance parameter set, wherein the display luminance parameter set comprises maximum display luminance and/or minimum display luminance of a display device; obtaining an adjustment coefficient set, wherein the adjustment coefficient set comprises one or more adjustment coefficients, and the one or more adjustment coefficients correspond to the one or more parameters in the first mapping curve parameter set; and adjusting the one or more parameters in the first mapping curve parameter set based on the display luminance parameter set, the first maximum target system display luminance, and the adjustment coefficient set to obtain a second mapping curve parameter set, wherein the second mapping curve parameter set comprises one or more adjusted parameters, wherein adjusting the one or more parameters in the first mapping curve parameter set comprises: calculating an adjusted first parameter according to formula, wherein a first parameter is a parameter in the first mapping curve parameter set having a corresponding adjustment coefficient, and the adjusted first parameter belongs to the second mapping curve parameter set: P a = P b + k × P Δ wherein P a represents the adjusted first parameter, P b represents the first parameter, P Δ represents the corresponding adjustment coefficient, and k = MaxDisplay − M TPL M N or k = a × MaxDisplay − M TPL M N, wherein a=1 when MaxDisplay > M TPL, or a=-1 when MaxDisplay ≤ M TPL; MaxDisplay represents the maximum display luminance, M TPL represents the first maximum target system display luminance, N represents an adjustment control parameter and a rational number greater than 0, and M represents a preset luminance value and is 100 cd / m 2 or 50 cd / m 2. obtaining a first mapping curve parameter set and first maximum target system display luminance, wherein the first mapping curve parameter set corresponds to the first maximum target system display luminance, and the first mapping curve parameter set comprises one or more parameters related to a mapping curve, including at least one of a scaling factor, an offset factor, and a bending shape factor; obtaining a display luminance parameter set, wherein the display luminance parameter set comprises maximum display luminance and/or minimum display luminance of a display device; obtaining an adjustment coefficient set, wherein the adjustment coefficient set comprises one or more adjustment coefficients, and the one or more adjustment coefficients correspond to the one or more parameters in the first mapping curve parameter set; and adjusting the one or more parameters in the first mapping curve parameter set based on the display luminance parameter set, the first maximum target system display luminance, and the adjustment coefficient set to obtain a second mapping curve parameter set, wherein the second mapping curve parameter set comprises one or more adjusted parameters, wherein adjusting the one or more parameters in the first mapping curve parameter set comprises: calculating an adjusted first parameter according to formula, wherein a first parameter is a parameter in the first mapping curve parameter set having a corresponding adjustment coefficient, and the adjusted first parameter belongs to the second mapping curve parameter set: P a = P b + k × P Δ wherein P a represents the adjusted first parameter, P b represents the first parameter, P Δ represents the corresponding adjustment coefficient, and k = MaxDisplay − M TPL M N or k = a × MaxDisplay − M TPL M N, wherein a=1 when MaxDisplay > M TPL, or a=-1 when MaxDisplay ≤ M TPL; MaxDisplay represents the maximum display luminance, M TPL represents the first maximum target system display luminance, N represents an adjustment control parameter and a rational number greater than 0, and M represents a preset luminance value and is 100 cd / m 2 or 50 cd / m 2. calculating an adjusted first parameter according to formula, wherein a first parameter is a parameter in the first mapping curve parameter set having a corresponding adjustment coefficient, and the adjusted first parameter belongs to the second mapping curve parameter set: P a = P b + k × P Δ wherein P a represents the adjusted first parameter, P b represents the first parameter, P Δ represents the corresponding adjustment coefficient, and k = MaxDisplay − M TPL M N or k = a × MaxDisplay − M TPL M N, wherein a=1 when MaxDisplay > M TPL, or a=-1 when MaxDisplay ≤ M TPL; MaxDisplay represents the maximum display luminance, M TPL represents the first maximum target system display luminance, N represents an adjustment control parameter and a rational number greater than 0, and M represents a preset luminance value and is 100 cd / m 2 or 50 cd / m 2.