Abstract: The present invention discloses a modular architecture. The modular architecture comprises a first main part and a first extended part. The first main part comprises a first main side, a second main side, a first sub side, a second sub side, and a first empty room. The first extended part can be stowed in the first empty room, or be extended from the first main side of the first main part to increase the interior space of the modular architecture. The second main side of the first main part has at least one connecting frame, and the first sub side or the second sub side has a side connecting frame. The connecting frame or the side connecting frame is used to connect the architecture to connecting frames of other modular architectures.