The invention belongs to the field of building
engineering, and relates to a splicing type prefabricated wall body and an upper and lower connecting structure thereof. According to the technical scheme, a first prefabricated wall body and a second prefabricated wall body are spliced up and down, wherein a first steel
pipe is pre-buried at the bottom of the first prefabricated wall body, the upperpart of the first steel
pipe is buried in the first prefabricated wall body, and the lower part of the first steel
pipe is exposed out of the first prefabricated wall body; a second steel pipe is pre-buried at the bottom of the second prefabricated wall body, the lower part of the second steel pipe is buried in the second prefabricated wall body, and the upper part of the second steel pipe is exposed out of the second prefabricated wall body; the first steel pipe and the second steel pipe are vertically aligned and connected in position; and longitudinally distributed reinforcing steel bars exposed out of the first prefabricated wall body and the second prefabricated wall body are in staggered
lap joint anchoring with one another. According to the splicing type prefabricated wall body andthe upper and lower connecting structure thereof, a grouting sleeve is omitted, the upper and lower prefabricated wall bodies are connected with each other through adopting the additionally-arranged upper and lower steel pipes, so that a temporary support is formed, in this way, construction of upper and lower splicing of the prefabricated wall body is facilitated, and meanwhile the cost of the grouting sleeve is saved, and therefore the method is economical and reliable.