A method for detecting a folding angle of a foldable screen, comprising: acquiring detection data of a particular detection channel in a touch panel, wherein the touch panel comprises a bending region extending along a first direction and a non-bending region distributed on both sides of the bending region along a second direction, the second direction is perpendicular to the first direction, and the particular detection channel comprises a first detection channel that is closest to the bending region or is located within the bending region among a plurality of first detection channels parallel to the first direction; and determining the folding angle of the foldable screen according to the detection data of the particular detection channel, wherein the detection data of the particular detection channel is self-capacitance detection data output from the particular detection channel, the self-capacitance detection data being data of a sensing signal output from the particular detection channel when a drive signal is input to the particular detection channel; wherein the determining the folding angle of the foldable screen according to the detection data of the particular detection channel comprises: determining the folding angle of the foldable screen according to the detection data of the particular detection channel and a function for representing a relationship between the detection data and the folding angle; characterised in that the determining the folding angle of the foldable screen according to the detection data of the particular detection channel and the function for representing the relationship between the detection data and the folding angle comprises: differentiating the detection data of the particular detection channel and detection data of a first detection channel adjacent to the particular detection channel to obtain differential data of the particular detection channel; and determining the folding angle of the foldable screen according to the differential data of the particular detection channel and a function for representing a relationship between the differential data and the folding angle. acquiring detection data of a particular detection channel in a touch panel, wherein the touch panel comprises a bending region extending along a first direction and a non-bending region distributed on both sides of the bending region along a second direction, the second direction is perpendicular to the first direction, and the particular detection channel comprises a first detection channel that is closest to the bending region or is located within the bending region among a plurality of first detection channels parallel to the first direction; and determining the folding angle of the foldable screen according to the detection data of the particular detection channel, wherein the detection data of the particular detection channel is self-capacitance detection data output from the particular detection channel, the self-capacitance detection data being data of a sensing signal output from the particular detection channel when a drive signal is input to the particular detection channel; wherein the determining the folding angle of the foldable screen according to the detection data of the particular detection channel comprises: determining the folding angle of the foldable screen according to the detection data of the particular detection channel and a function for representing a relationship between the detection data and the folding angle; characterised in that the determining the folding angle of the foldable screen according to the detection data of the particular detection channel and the function for representing the relationship between the detection data and the folding angle comprises: differentiating the detection data of the particular detection channel and detection data of a first detection channel adjacent to the particular detection channel to obtain differential data of the particular detection channel; and determining the folding angle of the foldable screen according to the differential data of the particular detection channel and a function for representing a relationship between the differential data and the folding angle. determining the folding angle of the foldable screen according to the detection data of the particular detection channel and a function for representing a relationship between the detection data and the folding angle; characterised in that the determining the folding angle of the foldable screen according to the detection data of the particular detection channel and the function for representing the relationship between the detection data and the folding angle comprises: differentiating the detection data of the particular detection channel and detection data of a first detection channel adjacent to the particular detection channel to obtain differential data of the particular detection channel; and determining the folding angle of the foldable screen according to the differential data of the particular detection channel and a function for representing a relationship between the differential data and the folding angle. differentiating the detection data of the particular detection channel and detection data of a first detection channel adjacent to the particular detection channel to obtain differential data of the particular detection channel; and determining the folding angle of the foldable screen according to the differential data of the particular detection channel and a function for representing a relationship between the differential data and the folding angle.