Card holding mechanism and electronic device

An electronic device, comprising:

• a housing comprising a sidewall, the sidewall defining a through hole;
• and
• a card holding mechanism being received in the housing, the card holding mechanism comprising:
• a tray for receiving an electronic card, and capable of being ejected from the housing via the through hole;
• an operating component capable of moving between a latched position and an unlatched position;
• and
• a transmission component arranged between the operating component and the tray;
• wherein the operating component moves from the latched position to the unlatched position along a direction parallel with the sidewall and drives the transmission component to rotate, driving the tray to eject from the housing simultaneously, such that the electronic card received in the tray can be taken out.