Power ventilation building door and window curtain wall

The utility model belongs to the technical field of building decoration, and particularly relates to a power ventilation building door and window curtain wall which comprises a curtain wall body, a box body is installed above the curtain wall body, three extension plates are installed on the upper portion of the interior of the box body, and positioning covers are installed at the bottoms of the three extension plates. An eccentric block is mounted at the upper part in the positioning cover; firstly, the box body is fixed to the top of the using position, a base plate at the top of the curtain wall body makes contact with the bottom of a positioning cover in the box body, then a grip in the positioning cover is rotated clockwise, the ends of clamping plates are embedded into grooves formed in the base plate under the cooperation of the grooves, eccentric blocks, sliding rods and bearing seats, and therefore the curtain wall body can be installed; when the interior of the curtain wall body needs to be detached