Online maintenance operation box for effective load of space station

The invention relates to an online maintenance operation box for a space station effective load, which comprises an integrally formed operation box truss and a panel hermetically covering the operation box truss, and the operation box truss and the panel are encircled to form an operation box body of a closed structure; a partition plate is arranged in the operation box body, a back plate interlayer is formed between the partition plate and a back panel of the operation box body, and an operation area is formed between the partition plate and a front panel of the operation box body; load auxiliary operation equipment is arranged in the operation area, and a cabin penetrating connector electrically connected with a cable connected with the load auxiliary operation equipment is connected to the panel in a sealed mode. A three-waste treatment device and an environment monitoring device are arranged in the backboard interlayer, a main body structure of the environment monitoring device is located in the backboard