Sealing box door assembly and sealing box

The invention discloses a sealing box door assembly and a sealing box. The sealing box door assembly is used for opening or sealing the sealing box, and the sealing box door assembly comprises a first door used for being in sealing butt joint with a sealing box door and a second door arranged on the outer side of the first door. When the sealing box door is closed, the first door is in butt joint with the sealing box in a sealing mode, the second door applies lateral pressure to the first door through partial or all gravity of the second door, and the first door is pushed to the sealing box. Through the double-door structure, the gravity of the second door is utilized to apply pressure to the first door, so that the purity in the operation space of the sealing box is ensured, leakage and invasion of external substances possibly occurring due to gaps or tiny diffusion are effectively prevented, and the gas purity is effectively controlled. 本发明公开了一种密封箱门组件及密封箱，用于开启或密封密封箱，包括用于与密封箱门密封对接的第一重门，和设置于第一重门外侧的第二重门；在关闭密封密