Composite bed chair

The invention discloses a composite bed chair. The composite bed chair comprises a first chair, a second chair and a third chair. The first chair comprises a first seat, a first supporting plate, a second supporting plate, a third supporting plate and a back plate, the first supporting plate is provided with a first opening, and the second supporting plate is provided with a second opening. The second chair comprises a second seat and a fourth supporting plate, and the second seat can be folded into the first chair when the composite bed chair is folded. The third chair comprises a third seat and a fifth supporting plate, and the third seat can be folded into the first chair when the composite bed chair is folded. Additionally, when the composite bed chair is linearly unfolded or folded, the fourth supporting plate of the second chair and the fifth supporting plate of the third chair are back plates vertical to the first chair. 在此揭示种复合式坐卧两用椅，包括第椅子、第二椅子和第三椅子。所述第椅子，包括第椅座、第支撑板、第二支撑板、第三支撑板和背板，且第支撑板和第二支撑板上分别设有第开口和