A method and an apparatus for correcting a tilt of a subject occurred in photographing, as well as a mobile terminal and a computer storage medium are provided. In some embodiments, the method includes: after it is detected by a mobile terminal that the subject enters a viewfinder interface, identifying a boundary of a profile of the subject to obtain the profile of the subject; analyzing the profile of the subject to determine whether the subject is tilted; and performing a process for straightening and photographing on the subject to obtain a picture in which the subject is straightened if the subject is determined to be tilted.