The invention provides an electrode structure of an illuminating device, and the illuminating device, relates to the display technology field and solves a problem of obvious non-uniform brightness phenomena of an OLED illuminating device as display brightness close to a current input end and display brightness away from the current input end of the OLED illuminating device in the prior art have great difference. The electrode structure comprises a driving electrode layer and an auxiliary electrode layer, wherein the driving electrode layer comprises at least one conductive unit, the conductive unit comprises at least two electrode patterns sequentially arranged from a center to an edge of the driving electrode layer, areas of the electrode patterns of one conductive unit sequentially increase from the center to the edge of the driving electrode layer, the auxiliary electrode layer comprises first connection wires extending from the center to the edge of the driving electrode layer, and each first connection wire is connected with at least one electrode pattern of the one conductive unit. The electrode structure is advantaged in that the electrode structure is used for manufacturing the illuminating device.