Abstract: A vector search method includes: obtaining a to-be-queried vector; searching an index library for a first index corresponding to the to-be-queried vector, where the index library includes a plurality of indexes, each index corresponds to one first cluster, the first cluster includes a plurality of second clusters, each index records a first cluster center vector and a plurality of second cluster center vectors, feature vectors corresponding to the first cluster are clustered using the first cluster center vector, and feature vectors corresponding to each second cluster are clustered using each second cluster center vector; searching the first index for a second cluster center vector corresponding to the to-be-queried vector; finding a second cluster corresponding to the second cluster center vector based on the second cluster center vector; and searching a plurality of feature vectors included in the second cluster for a target feature vector related to the to-be-queried vector.