Prefabricated wallboard and fabricated house

The utility model relates to a prefabricated wall panel and a fabricated house. The prefabricated wall panel comprises an outer leaf wall, a heat preservation layer, an inner embedded panel, an inner leaf wall and a fastening assembly. According to the scheme, due to the fact that the prefabricated wall panel formed through pouring comprises the heat preservation layer, during assembling, only the prefabricated wall panel needs to be installed at the corresponding position, the heat preservation layer does not need to be installed on the indoor or outdoor wall face again, and the installation process is simplified. Meanwhile, after the prefabricated wallboard is formed through pouring, the corresponding heat preservation layer is located in the prefabricated wallboard all the time, the risk that when the heat preservation layer is located on the indoor or outdoor wall face, the heat preservation layer falls off is avoided, and safety is effectively improved. Moreover, after the prefabricated wallboard is pour