Method for realizing siesta function on desks and chairs and sitting and lying dual-purpose desks and chairs

The invention relates to a method for realizing nap function on desks and chairs, a desk and chair for sitting and sleeping is designed and composed of a desk cabinet, desk legs and a desk base. The chair comprises a chair base and a seat plate assembly. The chair base and seat plate assembly are movably connected. The desk cabinet of the desk is hinged on the desk leg. The desk and chair base andseat plate assembly are hinged each other. The seat plate assembly comprises a backrest plate, a seat plate and a support plate which are hinged together. The desk cabinet is hinged on the chair baseand is folded into a chair shape or a lounge chair shape when in use, the table cabinet of that desk is hinged on the legs of the table so as to rotate the table cabinet around the hinge during the afternoon nap to make room for the user to lie down. The desk is matched with the classroom chair. The invention realizes the function of lying on the desk and chair without increasing the floor area of the desk and chair, prov