Building thermal-insulation outer wall and production method thereof

The invention discloses a building thermal-insulation outer wall and a production method of the building thermal-insulation outer wall, and relates to the technical field of building thermal insulation. The building thermal-insulation outer wall comprises a first base layer wall body and a second base layer wall body which are arranged in parallel at an interval, a vacuum cavity is fixed between the first base layer wall body and the second base layer wall body, an exhaust pipe communicating with the interior of the vacuum cavity is fixed to the vacuum cavity, an opening of the exhaust pipe extends out of the wall body, and a sealing assembly is arranged at the opening of the exhaust pipe; and by means of the vacuum cavity formed between the first base layer wall body and the second base layer wall body and in cooperation with the exhaust pipe, the thermal insulation and heat insulation performances of the wall body is guaranteed. The production method of the building thermal-insulation outer wall comprises t