The invention relates to a deep-sea high-pressure dry type maintenance device. The deep-sea high-pressure dry type maintenance device comprises a diving bell, and one end of the diving bell is in
butt joint with a high-pressure dry type maintenance chamber in an airtight or watertight mode. The deep-sea high-pressure dry type maintenance device is reasonable in design and convenient to use; and by adoption of the modular structural design, the diving bell and the high-pressure dry type maintenance chamber can be connected and separated rapidly on a
deck, and therefore the deep-sea high-pressure dry type maintenance device has the advantages of being easy to assemble and reliable in connection. By adoption of the deep-sea high-pressure dry type maintenance device, the integral hanging and recycling of the diving bell and the maintenance chamber is achieved, so that maintenance workers can keep staying in a high-pressure and dry environment in the whole maintenance process, a wet
working environment is avoided, and the range of working objects is expanded; and meanwhile, the maintenance workers are provided with a safe and comfortable
working space. By adoption of the deep-sea high-pressure dry type maintenance device, the requirement for
saturation diving can be met, working time can be effective prolonged for the maintenance workers by providing
high pressure gas in the diving bell and the maintenance chamber, so that long-time
underwater working is achieved, working efficiency is improved, and the whole working period is shortened.