The invention relates to a preparation method of a solar cell panel taking carbon spots as an anode buffer layer. In terms of the condition that the solar cell panel is low in light conversion efficiency and low in stability, conducting glass ITO is taken as a cathode layer, non-ferrous metal aluminum is taken as an anode layer, the anode buffer layer is additionally arranged, the carbon spots are firstly prepared, and then the solar cell panel is prepared by spinning and evaporating a cathode buffer layer, an organic active layer, the anode buffer layer and a metal anode layer, so that the extraction and transmission capacity of the solar cell panel for electrons are improved, the impedance of the device is reduced, the energy conversion efficiency is high, and the solar cell panel has wet resistance, can prevent water and oxide erosion and is high in stability, the preparation method is advanced in process, the data are accurate, full and accurate, a continuous technological process can be formed from the preparation of the carbon spots and the preparation of the solar cell panel, and the preparation method of the solar cell panel taking the carbon spots as the anode buffer layer is advanced.