A sliding mechanism with changeable paths and a cellular phone are disclosed. The sliding mechanism comprises a sliding plate, a V-shaped resilience device, and a fixed plate. The sliding plate is fixed to a sliding portion of the cellular phone, and the fixed plate is fixed on a holding base of the cellular phone. When the sliding plate is pushed to move a predetermined distance, the sliding plate can be driven by the resilient force of the V-shaped resilience device to automatically slide with respect to a V-shaped support having a turning ring and along guiding slots and guiding edges on the fixed plate. The sliding plate can automatically slide through a remaining portion of a path when the sliding plate is first pushed to move a predetermined distance, thereby enabling answering or hanging up of the cellular phone semi-automatically.