Prefabricated building construction technology

The invention discloses a prefabricated building construction technology, and relates to the technical field of prefabricated building construction. Comprising the following steps that the size is rechecked on a construction site, and site paying-off is conducted according to a construction drawing; a keel system is installed strictly according to a construction drawing and on-site paying-off, the distance between transverse keels is not larger than 600 mm, and the distance between vertical keels is not larger than 800 mm; when the wallboards are installed, the installation sequence is paid attention to, and the internal corner cutting edge should be pressed by the original edge or the planed edge of the adjacent wallboard; when dry-hanging ceramic tiles are used on the wall surface of a bathroom, waterproof silica gel needs to be arranged in a tongue-and-groove female groove of a shower room area in a vertically-through mode; and a single-sided self-adhesive waterproof adhesive tape is adhered to the interna