This application provides a method for calculating position information in a touchscreen and an electronic device. In the method for calculating position information in a touchscreen, because a touch chip transmits, by using a high-speed serial bus, source data generated by a trigger operation, first duration t1 for the touch chip to transmit the source data generated by the trigger operation can be shorter. Because position information of the trigger operation in the touchscreen is calculated in a CPU, second duration t2 for the CPU to calculate coordinates of a position at which a user triggers the touchscreen can also be shorter.