Height-adjustable sketching stool

The objective of the invention is to provide a sketching stool which has a simple structure and long service lifetime and can be adjusted in height and backrest position according to different users to improve applicability. To reach the objective, the sketching stool provided by the invention comprises a pedestal, wherein the middle part of the pedestal is provided with a middle backbone in a slant manner; the angle between the middle backbone and the pedestal is 60-75 degree; the upper part of the middle backbone is provided with a plurality of parallel backrest slots; backrest components are inserted into the backrest slots; the lower part of the middle backbone is provided with a plurality of parallel seat stool slots; seat stool components are inserted into the seat stool slots; and the seat stool slots are deeper than the backrest slots. According to the invention, when using the sketching stool, a user inserts the seat stool components and the backrest components into corresponding slots according to the height of the user, and then the sketching stool can be used. Both the seat stool components and the backrest components can be designed in a humanized manner. Although the sketching stool provided by the invention has a simple structure, the overall structure is stable and the sketching stool has long service lifetime.