The invention provides an anti-mosquito fish tank, which comprises a fish tank and a tank seat, wherein the fish tank is provided with an anti-mosquito oxygenation device, the anti-mosquito oxygenation device comprises a water curtain pump, a water curtain spray head, a small swinging boat and a controller, an output opening of the water curtain pump is connected with the water curtain spray head through a connecting pipe, a water inlet opening of the water curtain pump is positioned in water of the fish tank, the water curtain spray head is positioned besides the fish tank, and the small swinging boat is positioned on the water surface of the fish tank and is provided with a traction rope to be fixedly connected with the fish tank. The water surface of the fish tank is separated from the outside by the water curtain, the egg laying by mosquitoes on the water surface of the fish tank is prevented, meanwhile, the impact force generated when the water curtain falls down is used for impacting the small swinging boat, the water surface of the fish tank swings through the swinging of the small swinging boat, the egg laying by the mosquitoes on the water surface of the fish tank is prevented, and the mosquito breeding in the fish tank is prevented.