The invention discloses a cross-platform solar power generation auxiliary device based on stochastic production simulation, and belongs to the technical field of optoelectronics. The device is composed of a fixing frame (27), a photoelectric conversion head (28) and a connection frame (29). The device is characterized in that four sides of a cambered rhombic solar panel (1) of the photoelectric conversion head (28) form a rhombus, the thickness of the rhombus is 0.5-2cm, the rhombus comprises an inner surface and an outer surface, the inner surface is flat, in the same plane, the center of the outer surface is thick and bulges outwards to form a cambered surface; four sides of a cambered rhombic fixing plate (2) form a rhombus, an upper surface is flat, and the four sides are located in the same plane; and a lower surface bulges outwards, the center is thick, the thickness is 2-10cm, the four sides are thin, the thickness is 1-5 cm, and the cross section of the lower surface is cambered, thereby enabling the lower surface to be a cambered surface. According to the cross-platform solar power generation auxiliary device based on stochastic production simulation, the preparation is simple, the operability is high, the cost is low, and the effect is clear.