The invention provides a signal collision separation method and apparatus. The signal collision separation method provided by the invention comprises the following steps: receiving an aliasing signal formed by signal collision; performing whitening processing on the aliasing signal to obtain the number of signal collision, and dividing a plurality of time periods according to the number of signal collision; and performing matrix transformation on a corresponding signal matrix within each time period to obtain a beam forming matrix, and obtaining separated signals according to the beam forming matrix. By adoption of the signal collision separation method and apparatus, the complexity of separation algorithm of multiple signal collision is reduced.