The invention discloses an ice tray cup. The cup comprises a cup body, the lower end of the cup body is fixedly provided with a cup bottom, the outer portion of the cup body is sleeved with a protective cover, the upper end of the cup body is provided with a cup cover, a water drinking hole is formed in a position, close to one side, of the outer surface of the upper end of the cup cover, an innerportion of the water drinking hole is threadedly connected with a sealing cover, a straw penetrates through the inner portion of the cup body, a water inlet is formed in the outer surface of the upper end of the cup body, water storage tanks are formed in the inner surfaces of the cup body and the cup bottom, the inner portions of the water storage tanks are movably provided with color buoys, thelower end of the cup bottom is glued with a fixing suction cup, and the outer surface of the lower end of the cup cover is fixedly provided with a connecting seat. The cup provides a better experience in the use of the ice tray cup by arranging a series of structures, and does not cause damage to the cup body caused by water ice collision after excessive water is poured in the water storage tanksduring use, and the ice tray cup can be made to have more functions.