Prefabricated exterior wall formwork for fabricated building

The invention relates to the technical field of building materials, and discloses a prefabricated exterior wall formwork for a fabricated building. The prefabricated exterior wall formwork comprises a formwork body I and a formwork body II, wherein the front face of the formwork body I is provided with a filling groove I, the two sides of the bottom of the filling groove I are provided with filling pipes I, the filling pipes I penetrate through the formwork body I, the two sides of the bottom of the filling groove I are provided with the filling pipes I, and the bottom of a filling groove II is provided with filling pipes II. On the one hand, the overall weight of the formwork body I is reduced, transportation is facilitated, the usage amount of concrete can be reduced during pouring, and the production cost is reduced; on the other hand, after the formwork body I and the formwork body II are spliced, whether the formwork body I and the formwork body II are installed in the same plane or not can be checked th