A terminal device, comprising: a housing having a flexible structure and being able to bend at the flexible structure; an audio cavity component located within the housing, wherein a deformation state is able to be formed at the audio cavity component corresponding to a deformation occurring at the flexible structure of the housing; and a processing component, configured to determine, based on the deformation state of the audio cavity component, an audio processing parameter matching the deformation state of the audio cavity component; characterized in that the terminal device further comprises: a rotation shaft located within the housing, wherein the rotation shaft is configured to, when an external force is applied onto the rotation shaft via the housing, rotate and drive the housing to bend at the flexible structure; wherein the audio cavity component is configured to, when the housing bends, form the deformation state corresponding to the rotation of the rotation shaft; wherein the audio cavity component comprises: a first audio cavity with a deformable structure and arranged at a side of the rotation shaft facing an inside of the housing; wherein when the rotation shaft rotates a first rotation angle, the first audio cavity is in a first deformation state; when the rotation shaft rotates a second rotation angle, the first audio cavity is in a second deformation state; and when a rotation angle of the rotation shaft is between the first rotation angle and the second rotation angle, the first audio cavity is in a third deformation state; a second audio cavity, connected to the first audio cavity; and a third audio cavity, connected to the first audio cavity; wherein the second audio cavity and the third audio cavity are located on both sides of the first audio cavity. a housing having a flexible structure and being able to bend at the flexible structure; an audio cavity component located within the housing, wherein a deformation state is able to be formed at the audio cavity component corresponding to a deformation occurring at the flexible structure of the housing; and a processing component, configured to determine, based on the deformation state of the audio cavity component, an audio processing parameter matching the deformation state of the audio cavity component; a rotation shaft located within the housing, wherein the rotation shaft is configured to, when an external force is applied onto the rotation shaft via the housing, rotate and drive the housing to bend at the flexible structure; wherein the audio cavity component is configured to, when the housing bends, form the deformation state corresponding to the rotation of the rotation shaft; wherein the audio cavity component comprises: a first audio cavity with a deformable structure and arranged at a side of the rotation shaft facing an inside of the housing; wherein when the rotation shaft rotates a first rotation angle, the first audio cavity is in a first deformation state; when the rotation shaft rotates a second rotation angle, the first audio cavity is in a second deformation state; and when a rotation angle of the rotation shaft is between the first rotation angle and the second rotation angle, the first audio cavity is in a third deformation state; a second audio cavity, connected to the first audio cavity; and a third audio cavity, connected to the first audio cavity; wherein the second audio cavity and the third audio cavity are located on both sides of the first audio cavity.