A data collecting method and apparatus, and a mobile terminal are provided. The data collecting method may be applied in an apparatus including multiple data collecting units. The method includes collecting, by at least two data collecting units, initial data simultaneously at their respective collecting frequencies and at a collection starting moment and collecting, at a synchronous collecting frequency, the initial data collected by the at least two data collecting units so as to obtain synchronous data. The synchronous collecting frequency is a common divisor frequency of the respective collecting frequencies of the at least two data collecting units.