Abstract: An inflatable and deflatable air pump includes a panel, a panel cover matched with the panel, an air chamber installed inside of the panel cover, a motor connected with the air chamber, and a hollow cylindrical shifting switch. A plurality of air inlet-outlet holes are formed on the panel, a vent valve is disposed on the panel cover, an impeller is disposed in the air chamber and is connected thereto with a rotating shaft of the motor, and two air chamber holes are formed on the air chamber. The shifting switch is connected with a connecting linkage, and the connecting linkage is connected with a driving switch, two radial through holes perpendicular to each other and two radial half through holes perpendicular to each other are formed on the shifting switch, and a protruding stopping element is disposed on the shifting switch.