A touch panel, comprising: a base substrate; a plurality of touch electrode lines; a plurality of cathodes arranged in a matrix, wherein each of the cathodes is electrically connected to at most three of the plurality of touch electrode lines; and a plurality of spacers located at gaps between the cathodes, wherein each of the spacers comprises a first photo spacer and a second photo spacer stacked successively on the base substrate; wherein the second photo spacer is located on the first photo spacer; wherein each of the touch electrode lines comprises a first lead part and a second lead part, wherein the first lead part is electrically connected with corresponding one of the cathodes, and the second lead part is configured to electrically connect the first lead part with a corresponding pin on a touch integrated circuit; and the first lead part at least covers a surface of the first photo spacer, adjacent to the corresponding cathode connected therewith, facing the cathode; wherein the touch panel further comprises: a first insulation layer located between the first photo spacer and the second lead parts; wherein the first insulation layer comprises a plurality of via-holes corresponding to the touch electrode lines in a one-to-one manner; and the second lead parts of the touch electrode lines are electrically connected with the first lead parts through the via-holes; anodes located between the first insulation layer and the cathodes; and a light-emitting functional layer located between the anodes and the cathodes; wherein the anodes and the light-emitting functional layer are patterned and are spaced from borders of the spacers as well as from the first lead part; and wherein orthographic projections of the cathodes onto the base substrate overlap with orthographic projections of their adjacent first photo spacers onto the base substrate; wherein orthographic projections of the second photo spacers onto the base substrate do not overlap with the orthographic projections of the cathodes onto the base substrate; wherein in a same spacer, an orthographic projection of a second photo spacer on the base substrate is located in an orthographic projection of a first photo spacer on the base substrate. a base substrate; a plurality of touch electrode lines; a plurality of cathodes arranged in a matrix, wherein each of the cathodes is electrically connected to at most three of the plurality of touch electrode lines; and a plurality of spacers located at gaps between the cathodes, wherein each of the spacers comprises a first photo spacer and a second photo spacer stacked successively on the base substrate; wherein the second photo spacer is located on the first photo spacer; wherein each of the touch electrode lines comprises a first lead part and a second lead part, wherein the first lead part is electrically connected with corresponding one of the cathodes, and the second lead part is configured to electrically connect the first lead part with a corresponding pin on a touch integrated circuit; and the first lead part at least covers a surface of the first photo spacer, adjacent to the corresponding cathode connected therewith, facing the cathode; wherein the touch panel further comprises: a first insulation layer located between the first photo spacer and the second lead parts; wherein the first insulation layer comprises a plurality of via-holes corresponding to the touch electrode lines in a one-to-one manner; and the second lead parts of the touch electrode lines are electrically connected with the first lead parts through the via-holes; anodes located between the first insulation layer and the cathodes; and a light-emitting functional layer located between the anodes and the cathodes; wherein the anodes and the light-emitting functional layer are patterned and are spaced from borders of the spacers as well as from the first lead part; and a first insulation layer located between the first photo spacer and the second lead parts; wherein the first insulation layer comprises a plurality of via-holes corresponding to the touch electrode lines in a one-to-one manner; and the second lead parts of the touch electrode lines are electrically connected with the first lead parts through the via-holes; anodes located between the first insulation layer and the cathodes; and a light-emitting functional layer located between the anodes and the cathodes; wherein the anodes and the light-emitting functional layer are patterned and are spaced from borders of the spacers as well as from the first lead part; and wherein orthographic projections of the cathodes onto the base substrate overlap with orthographic projections of their adjacent first photo spacers onto the base substrate; wherein orthographic projections of the second photo spacers onto the base substrate do not overlap with the orthographic projections of the cathodes onto the base substrate; wherein in a same spacer, an orthographic projection of a second photo spacer on the base substrate is located in an orthographic projection of a first photo spacer on the base substrate.