Vertical joint waterproof structure of prefabricated outer wall of fabricated building

The utility model discloses an assembly type building prefabricated outer wall vertical joint waterproof structure which comprises a first prefabricated outer wall and a second prefabricated outer wall which are vertically connected, grooves are formed in the side faces of the first prefabricated outer wall and the second prefabricated outer wall, the assembly type building prefabricated outer wall vertical joint waterproof structure further comprises two water stop rubber strips, and one part of each vertical water stop rubber strip is embedded in the corresponding prefabricated outer wall. The joint between the first prefabricated outer wall and the second prefabricated outer wall is filled with cast-in-place concrete, and first pressing grooves are vertically formed in the edges of theouter sides of the first prefabricated outer wall and the second prefabricated outer wall; and two second pressing grooves with the same size as the first pressing grooves are respectively reserved inthe cast-in-place concret