A method/system for avoiding software conflicts, with library being divided into layer 1 to layer M and M≧1. The method including the following steps: before a program runs, prescanning calling functions of the binary executable code of the program and called functions that belong to libraries of layer 1 and are individually called by the calling functions of the binary executable code of the program, and if M>1, further prescanning calling functions that belong to libraries of layer 1 to layer M−1 and called functions that belong to libraries of layer 2 to layer M and are individually called by the calling functions that belong to libraries of layer 1 to layer M−1, so as to determine whether there exists any individual conflict between the calling functions and the corresponding called functions; if there exists at least one conflict, storing at least one piece of conflict information individually indicating the at least one conflict; and when the program calls a library directly called by the program, abandoning loading of the library if conflict information correspond to the library has been stored, or loading the library otherwise.