Cup lid of disposable cup

The utility model relates to a cup lid of a disposable cup. The cup lid of the disposable cup comprises a lid edge clamped on the edge of a cup rim, a containing cavity formed in the inner side of the lid rim and a straw channel, wherein the bottom of the containing cavity is sealed, and the top of the containing cavity is open. Channel bodies allowing a straw to pass through are formed in the bottom and the top of the straw channel. The cup lid of the disposable cup not only has the function of an ordinary cup lid, but also can contain foods, so that people can enjoy drinks and snacks in the cup at the same time during relaxation, great convenience is brought to people's life, and the life quality is improved. Particularly, the cup lid of the disposable cup seems to be more convenient when there is no container for containing the foods around.