The utility model relates to an aquarium lamp cover plate device, which comprises a base plate, at least one LED lamp plate, a plurality of wires, a waterproof rubber layer and a plug.At least one first groove is formed on the first side of one of the base plates to accommodate the LED light plate, and the waterproof rubber layer is arranged in the first groove of the base plate to cover the LED light plate, and the plug is electrically connected to the LED light plate through the wire.When the cover plate of the aquarium lamp is set on a aquarium, due to the protection of the LED lamp plate through the waterproof rubber layer, it will not be affected by moisture and splashing water, and because the cover plate of the aquarium lamp is not set with a lampshade, it will not affect the light intensity, and it can provide enough brightness for the user to watch the aquatic animals raised.本新型係一水族箱燈蓋板裝置，水族箱燈蓋板裝置包含有一基板、至少一發光二極體(LED)燈板、複數電線、一防水膠層及一插頭。基板之一第一面形成有至少一第一凹槽，以容置LED燈板，且防水膠層設置於基板之第一凹槽中，以覆蓋LED燈板，而插頭透過電線電連接至LED燈板。當該水族箱燈蓋板設置在一水族箱上時，由於LED燈板透過該防水膠層的保護，因此不會受到濕氣與濺起水花的影響，且因為水族箱燈蓋板設置並未設置燈罩，故不會影響到光線強度，能提供足夠的亮度讓使用者觀賞飼養的水中生物。
