Supporting structure with sucking unit

A supporting structure, comprising:

• a seat having a bulged portion, a cavity, and a perforation, wherein the cavity of the seat is formed corresponding to the bulged portion, and the perforation communicates with the cavity;
• a sucking unit comprising a suction cup, a protruding column, and a check valve, wherein the suction cup is located in the cavity of the seat;
• the protruding column has a gas channel and a first end and a second end that are opposite;
• the first end of the protruding column is connected to a central portion of the suction cup, and the second end passes through the perforation of the seat;
• the check valve is disposed in the gas channel of the protruding column;
• a support having a top portion and a bottom portion, wherein the top portion of the support is adapted to be connected to an article;
• the bottom portion of the support is connected to the second end of the protruding column;
• and
• a rotary plate passed through by the protruding column and located between the seat and the bottom portion, wherein the rotary plate is rotatable along the protruding column between a first position and a second position;
• when the rotary plate is located at the first position, the check valve is open to unblock the gas channel;
• when the rotary plate is located at the second position, the check valve is closed to block the gas channel.