Abnormal link detection method and device and storage medium

The embodiment of the invention provides an abnormal link detection method. The abnormal link detection method comprises the following steps: receiving network data of at least one network node in a communication link; acquiring network features corresponding to the network data; inputting the network features to a first model to obtain a detection result of whether the communication link is an abnormal link, the first model being a model obtained by training a second model obtained by last training according to marked samples, K marked samples and M unmarked samples in a first sample set when the training meets a preset condition, the K marked samples are obtained by respectively marking K unmarked samples in the first sample set, the M unmarked samples are unmarked samples which are selected from the first sample set and serve as negative samples, and the first sample set comprises the marked samples and the unmarked samples which are stored in advance before the K unmarked samples and the M unmarked sample