A terminal, characterized by comprising: a glass cover plate; an infrared sensor, wherein the infrared sensor comprises a transmitter and a receiver; and a first light guide structure and/or a second light guide structure, wherein the first light guide structure is fixed between the transmitter and the glass cover plate, and the second light guide structure is fixed between the receiver and the glass cover plate; the first light guide structure obliquely extends from a light emitting surface of the transmitter toward the glass cover plate, and an oblique direction is away from an orthographic projection of the receiver on the glass cover plate; and the second light guide structure obliquely extends from a light emitting surface of the receiver toward the glass cover plate, and an oblique direction is away from an orthographic projection of the transmitter on the glass cover plate; wherein the first light guide structure comprises a first light guide tube and a second light guide tube, a first end of the first light guide tube faces the transmitter, a second end of the first light guide tube is communicated with and fixedly connected to a first end of the second light guide tube, and a second end of the second light guide tube faces the glass cover plate; and an inner wall of the first light guide tube is coated with a specular reflection material, an inner wall of the second light guide tube is coated with a light absorbing material, and an included angle between an axis of the first light guide tube and a facing direction of the transmitter is greater than 0° and less than 90°; and the second light guide structure comprises a third light guide tube and a fourth light guide tube, a first end of the third light guide tube faces the receiver, a second end of the third light guide tube is communicated with and fixedly connected to a first end of the fourth light guide tube, and a second end of the fourth light guide tube faces the glass cover plate; and an inner wall of the third light guide tube is coated with a specular reflection material, an inner wall of the fourth light guide tube is coated with a reflection material, and an included angle between an axis of the third light guide tube and a facing direction of the receiver is greater than 0° and less than 90°. a glass cover plate; an infrared sensor, wherein the infrared sensor comprises a transmitter and a receiver; and a first light guide structure and/or a second light guide structure, wherein the first light guide structure is fixed between the transmitter and the glass cover plate, and the second light guide structure is fixed between the receiver and the glass cover plate; the first light guide structure obliquely extends from a light emitting surface of the transmitter toward the glass cover plate, and an oblique direction is away from an orthographic projection of the receiver on the glass cover plate; and the second light guide structure obliquely extends from a light emitting surface of the receiver toward the glass cover plate, and an oblique direction is away from an orthographic projection of the transmitter on the glass cover plate; wherein the first light guide structure comprises a first light guide tube and a second light guide tube, a first end of the first light guide tube faces the transmitter, a second end of the first light guide tube is communicated with and fixedly connected to a first end of the second light guide tube, and a second end of the second light guide tube faces the glass cover plate; and an inner wall of the first light guide tube is coated with a specular reflection material, an inner wall of the second light guide tube is coated with a light absorbing material, and an included angle between an axis of the first light guide tube and a facing direction of the transmitter is greater than 0° and less than 90°; and the second light guide structure comprises a third light guide tube and a fourth light guide tube, a first end of the third light guide tube faces the receiver, a second end of the third light guide tube is communicated with and fixedly connected to a first end of the fourth light guide tube, and a second end of the fourth light guide tube faces the glass cover plate; and an inner wall of the third light guide tube is coated with a specular reflection material, an inner wall of the fourth light guide tube is coated with a reflection material, and an included angle between an axis of the third light guide tube and a facing direction of the receiver is greater than 0° and less than 90°.