A card holder is used for an electronic device having a housing, and is able to accommodate a data card and be inserted into the housing. The card holder includes a card tray and a card cover. The card tray is configured to accommodate the data card. The card cover is connected to the card tray, is rotatable relative to the card tray, and includes a first end and a second end opposite to each other and a first protrusion extending towards the card tray. When the card holder is in a state of being inserted into the housing and a pushing force is applied to the first end, the card cover is rotatable about the first protrusion such that the first end extends further into the housing and the second end extends out of the housing. An electronic device is also provided.