Detachable portable computing apparatus includes a base, a connecting component and a display component. The connecting component includes a housing, a first magnetic unit, and a guide pin. The housing has an opening on the housing. The first magnetic unit locates inside the housing, and moves toward or away from the opening. The guide pin is connected to and interlocking with the first magnetic unit. The guide pin can be accommodated inside the housing or protruded outside the housing from opening. The display component includes a guided socket and a second magnetic unit. The guided socket and the second magnetic unit are located at same side of the display component. While the second magnetic unit of the display computing component approaches the opening, the first magnetic unit is attracted, to drive the guide pin to be protruded outside the housing, and connects with the guided socket.