The invention relates to a mouth-shaped concentrating photovoltaic cell chip, and belongs to the technical field of solar photovoltaic power generation. The mouth-shaped concentrating photovoltaic cell chip comprises a negative electrode segment layer, a concentrating photovoltaic cell substrate layer, a positive electrode layer and an effective area, wherein the negative electrode segment layer is coated on one surface of the concentrating photovoltaic cell substrate layer, the positive electrode layer is coated on the other surface of the concentrating photovoltaic cell substrate layer, a part in the negative electrode layer is the effective area. By the cell chip, the usage of the concentrating photovoltaic cell substrate material can be greatly reduced, and thus, the fabrication cost of the concentrating photovoltaic cell chip can be reduced; the mouth-shaped negative electrode of the cell chip can be used for rapidly exporting a current, the collision of the current to ions in other battery materials is reduced, and the conversion efficiency of the cell chip can be integratedly improved; the width of an electrode segment is increased with the increase on concentrating multiplying rate of a lens; meanwhile, the electrode is adjusted to the electrode segment, the invariance of light receiving area is maintained, the integral power generation efficiency of a concentrating photovoltaic system is not reduced; and by increasing the width of the negative electrode segment, concentrating light can be enabled to be converted to large-current electric energy after the amplification rate of the lens is increased, and the electric energy can be smoothly exported through the negative electrode segment.