The invention discloses a small three-dimensional cultivation device and relates to the technical field of plant cultivation. The small three-dimensional cultivation device comprises a main cultivation frame and a lifting frame. The main cultivation frame comprises multiple layers of bearing frames. Each layer of bearing frame comprises rails A, wherein a cultivation box is arranged between the rails A on the two sides in a lap joint mode. The rails A are connected through stand columns A and provided with photosensitive sensors. The lifting frame comprises stand columns B provided with sliding blocks. The sliding blocks are provided with rails B. Rolling wheels are arranged on the lower sides of the cultivation boxes which move by means of a motor A. The sliding blocks move by means of a motor B connected with a lead screw. The output ends of the photosensitive sensors are connected with a PLC. The motor A and the motor B are controlled by the PLC. By the adoption of the highly-automatic design, labor can be saved; by the adoption of three-dimensional cultivation, land can be saved, and sunlight is sufficiently utilized.