The utility model provides a mobile phone placement platform comprising a support back plate and a turning cover, wherein the support back plate is provided with an accommodating cavity which opens to the front. The bottom edge of the turning cover is hinged on the lower edge of an opening of the accommodating cavity on the support back plate, and therefore the opening of the accommodating cavity can be opened and closed. A positioning mechanism is arranged between the turning cover and the support back plate, the turning cover and the support back plate are enabled to form a 90 degree included angle when the turning cover is opened, and the turning cover is provided with a baffle plate perpendicular to the turning cover. The mobile phone placement platform can be used for placement of mobile phones of various sizes and is characterized by simple structure, convenience of use, and safety and reliability.