The embodiment of the invention discloses a junk account detection method, device and equipment. According to the scheme, the method comprises: according to account history data, generating an accountmedia network diagram reflecting the registration relation, wherein the nodes in the account media network diagram represent accounts or media, the accounts are registered through the media, determining feature vectors of the nodes through unsupervised learning, training a risk model through supervised learning according to the determined feature vectors, and detecting the junk accounts through the trained risk model.