Cup lid and cup

A cup lid, comprising:

• a lid body provided with a water storage tank and a vent hole, wherein the vent hole extends through the lid body and the vent hole is located in the water storage tank;
• and
• a first cover connected to the lid body, wherein the first cover is capable of moving to a first position relative to the lid body;
• and when the first cover is located at the first position, the first cover covers at least a part of the water storage tank;
• wherein the lid body is further provided with a covering groove, the water storage tank is located in the covering groove, and when the first cover is located at the first position, at least a part of the first cover is located in the covering groove;
• and
• wherein the lid body is further provided with an exhaust groove, the covering groove is provided with a groove bottom and a groove wall, the covering groove is provided with a first side and a second side, the exhaust groove is communicated with the groove wall at the first side of the covering groove, and the water storage tank is arranged at the groove bottom;
• the first cover comprises a first connecting part and a first covering part which are connected with each other, the first connecting part is connected to the lid body, and the first connecting part is located at the second side of the covering groove;
• and when the first cover is located at the first position, the first cover covers the water storage tank, and the exhaust groove is communicated with the water storage tank.