To improve the convenience by using an office widely, and also, generate an excess in the space of the office even when a larger number of desks are arranged by forming the shape of a top plate into a hexagonal shape wherein at the approx. center of the top plate, an internal angle and an internal angle which is confronted with the first internal angle reflect at specified angles.

The planar shape of a top plate 1 is formed into a hexagonal shape wherein at the approx. center, one internal angle is made 110°-160°, and a confronted internal angle is made 200°-250°, and other angles are made 90°. Thus, when an office appliance, e.g. a small computer 10 is placed at the center of the top plate 1, the sleeve parts of a normal double sleeve desk are located close to a worker, and the worker can perform clerical processes other than the operation of the office appliance. Also, when the office appliance is placed on either one of the right and left sides of the top plate part, the remaining top plate part is close to the worker, and the remaining top plate part can be used for clerical processes other than the operation of the office appliance.