Waterproof structure of pull-out type expansion square cabin

The utility model discloses a waterproof structure of a drawing type expansion square cabin, which comprises a main cabin wall plate (1) and an expansion cabin top surface wall plate (3), and further comprises a sealing piece (2), one end of the sealing piece (2) is connected to the outer side of the upper end of an installation piece (5), and the other end of the sealing piece (2) is tightly attached to the main cabin wall plate (1) into a whole; the buffer piece (4) is connected to the inner side of the upper end of the mounting piece (5); and the mounting pieces (5) are symmetrically mounted at the two end parts of the expansion cabin top surface wallboard (3) and are used for mounting the sealing piece (2) and the buffer piece (4). The LED lamp is simple in structure, novel and reasonable in design, convenient to maintain and good in waterproof sealing effect; multiple waterproof modes are formed in the structural design in a matched mode, submerged water at the side wall of the main cabin and the top end