The invention provides a display screen visual angle control method and a mobile terminal. The method is applied to the mobile terminal, a liquid crystal polarization control unit is integrated on a display area of a display screen on the mobile terminal, and a processor of the mobile terminal is electrically connected with the liquid crystal polarization control unit through a power management chip. The method comprises the steps that when an input operation of a user is detected, the operation is judged; when the operation is a preset operation, the arranging direction of liquid crystal molecules in the liquid crystal polarization control unit is adjusted. Accordingly, the display screen visual angle is controlled by adjusting the arranging direction of liquid crystal molecules in the liquid crystal polarization control unit, and then the anti-peep function of the mobile terminal is achieved on the basis of the operation of the user, and the flexibility of the anti-peep function is improved.