Prefabricated concrete wall, fabricated building and construction method

The invention discloses a prefabricated concrete wall, a fabricated building and a construction method. A prefabricated formwork is arranged at the top of the prefabricated concrete wall body, a connecting groove is formed in the prefabricated formwork, a protruding anchoring block is arranged at the bottom of the prefabricated formwork, two rows of vertical steel bars are arranged in the prefabricated concrete wall body, and each row of vertical steel bars comprises a first vertical steel bar and a second vertical steel bar which are arranged at intervals. The tops of the first vertical steel bars extend out of the connecting grooves, and the bottoms of the second vertical steel bars extend out of the bottom of the prefabricated concrete wall. A floor slab connecting end is arranged on the side portion of the prefabricated concrete wall body, and a plurality of horizontal steel bars are arranged in the floor slab connecting end. According to the prefabricated concrete wall body, a sleeve does not need to be