The invention discloses a transformer respirator silica gel replacement device, relating to the technical field of transformers. The device comprises a tripod, a worktable and a fixator, wherein the fixator comprises a positioning ring and a fixed plate, the worktable comprises a stationary plate and a turning plate, the tripod is mounted on the stationary plate, the stationary plate is hinged tothe turning plate, the turning plate is provided with a first yielding hole, the positioning ring is arranged along the edge of the positioning hole, the edge of the positioning ring extends upward toform the fixed plate, and a strapping tape is arranged on the fixed plate to fix a transformer respirator. The transformer respirator silica gel replacement device does not need to be operated by multiple people, thereby improving the working efficiency.