Abstract: A car mount includes a base assembly having a supporting surface and a first gear structure. A main body includes a cover and is disposed on the supporting surface. The cover has a peripheral part, wherein the cover retreats inwardly from the peripheral part along a direction opposite to the base assembly to form a recession space. A rotor includes an axle body and a second gear structure. The axle body is accommodated in the recession space. A part of the axle body protrudes through the cover. The second gear structure is formed on a surface of the rotor facing the supporting surface. A first ring housing is rotatably disposed on the main body and connects the axle body. The first ring housing is capable of operating in a lock mode and an unlock mode for driving the rotor approaching to or departing from the supporting surface.