A double-faced display panel, comprising: a first display sub-unit, provided with a first display surface and a first non-display surface opposite to each other; a second display sub-unit, provided with a second display surface and a second non-display surface opposite to each other, and arranged back to back with the first display sub-unit, the second non-display surface facing the first non-display surface; and a reflection unit, arranged between the first display sub-unit and the second display sub-unit, wherein the reflection unit is configured to reflect displaying light emitted from the first display sub-unit back to the first display sub-unit and reflect displaying light emitted from the second display sub-unit back to the second display sub-unit, characterized in that the reflection unit comprises a switch layer, and a first reflection layer and a second reflection layer which are respectively complementarily arranged on both sides of the switch layer in a staggered manner, the first reflection layer is arranged on a side of the switch layer close to the second display sub-unit, and the second reflection layer is arranged on a side of the switch layer close to the first display sub-unit; the first display sub-unit comprises two first substrates oppositely arranged and a plurality of first sub-pixels arranged between the two first substrates, and the second display sub-unit comprises two second substrates oppositely arranged and a plurality of second sub-pixels arranged between the two second substrates; the first reflection layer is disposed to correspond to the first sub-pixels and the second reflection layer is disposed to correspond to the second sub-pixels; the switch layer comprises: an upper substrate, a lower substrate, a liquid crystal layer arranged between the upper substrate and the lower substrate, and a control electrode arranged on sides of the upper substrate and the lower substrate close to the liquid crystal layer, the control electrode being applied with a voltage to control liquid crystal in a liquid crystal cell to deflect; wherein "complementarity" means that the first reflection layer and the second reflection layer form a whole seamless pattern by parallel movement to a same plane, "staggered" means that orthogonal projections of the first reflection layer and the second reflection layer do not overlap on the switch layer. a first display sub-unit, provided with a first display surface and a first non-display surface opposite to each other; a second display sub-unit, provided with a second display surface and a second non-display surface opposite to each other, and arranged back to back with the first display sub-unit, the second non-display surface facing the first non-display surface; and a reflection unit, arranged between the first display sub-unit and the second display sub-unit, wherein the reflection unit is configured to reflect displaying light emitted from the first display sub-unit back to the first display sub-unit and reflect displaying light emitted from the second display sub-unit back to the second display sub-unit, characterized in that the reflection unit comprises a switch layer, and a first reflection layer and a second reflection layer which are respectively complementarily arranged on both sides of the switch layer in a staggered manner, the first reflection layer is arranged on a side of the switch layer close to the second display sub-unit, and the second reflection layer is arranged on a side of the switch layer close to the first display sub-unit; the first display sub-unit comprises two first substrates oppositely arranged and a plurality of first sub-pixels arranged between the two first substrates, and the second display sub-unit comprises two second substrates oppositely arranged and a plurality of second sub-pixels arranged between the two second substrates; the first reflection layer is disposed to correspond to the first sub-pixels and the second reflection layer is disposed to correspond to the second sub-pixels; the switch layer comprises: an upper substrate, a lower substrate, a liquid crystal layer arranged between the upper substrate and the lower substrate, and a control electrode arranged on sides of the upper substrate and the lower substrate close to the liquid crystal layer, the control electrode being applied with a voltage to control liquid crystal in a liquid crystal cell to deflect; wherein "complementarity" means that the first reflection layer and the second reflection layer form a whole seamless pattern by parallel movement to a same plane, "staggered" means that orthogonal projections of the first reflection layer and the second reflection layer do not overlap on the switch layer.