Water cup capable of producing oxygen-enriched water

The invention provides a water cup capable of producing oxygen-enriched water. The water cup capable of producing the oxygen-enriched water internally comprises an oxygen generation device and a sealing layer. The sealing layer divides the inside of the water cup into two portions, the oxygen generation device is positioned below the sealing layer, and a drinking water containing space is arranged above the sealing layer. The oxygen generation device comprises an oxygen-enriched membrane, a pump, an oxygen guide tube and a switch. An air suction inlet is formed in one side, corresponding to the oxygen-enriched membrane, of the water cup, the pump is positioned on the other side of the oxygen-enriched membrane, one end of the pump is electrically connected with a power supply, two ends of the oxygen guide tube are communicated with the pump and the drinking water containing space respectively, an oxygen guide-out groove is formed in the inner side of the cup wall of the drinking water containing space, and the