Sucker

A sucker comprising:

• a main body, a bottom face of the main body being formed with a concaved room;
• an annular contact area being disposed on the bottom face of the main body and positioned around the room;
• a disc body made of a flexible material, the disc body having a tapered annular wall, the disc body being disposed under the bottom face of the main body, an outer circumference of the tapered annular wall being outward extended to forma lip edge, the lip edge being positioned below the annular contact area of the main body for in contact with the contact area;
• an air chamber being formed in the disc body and defined by the annular wall of the disc body;
• an air-sucking passage positioned in the main body and the disc body, the air-sucking passage having a first end and a second end, the first end of the air-sucking passage communicating with the air chamber of the disc body, the second end of the air-sucking passage passing through the disc body and the room of the main body;
• and
• a fast flow way;
• the second end of the air-sucking passage communicating with the fast flow way;
• when air flows through the fast flow way, the air in the air-sucking passage is sucked into the fast flow way.