Mobile phone mainboard and mobile phone

The utility model discloses a mobile phone mainboard and a mobile phone. The mainboard comprises a first zone and a second zone which are respectively equipped with an electronic element. A card reader seat is put up above the first zone through a contact elastic foot. The mainboard is connected with the card reader seat through the contact elastic foot. A height space, which can accommodate the electronic element located on the first zone, is formed between the card reader seat and the mainboard, thereby enabling the layout area of a printed circuit board to be reduced by more than 30%. Because the layout area is reduced, the size of the whole mainboard is also reduced, thereby enabling the mobile phone to be made smaller, and enabling the weight of the whole mobile phone to be reduced.